McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 1301. |
The antibiotic penicillin is obtained from which of the following? |
| A. | synthetic process |
| B. | a bacterium |
| C. | fungus |
| D. | virus infected cells |
| Answer» C. fungus | |
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Explanation: Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming. |
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| 1302. |
DPT vaccine is categorized as which of the following? |
| A. | Anti viral vaccine |
| B. | Anti protozoan vaccine |
| C. | Anti rickettsial vaccine |
| D. | A combined vaccine |
| Answer» D. A combined vaccine | |
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Explanation: Dpr refers to a class of combination vaccines against three infectious diseases in humans: diph-theria, pertussis(whooping cough), and tetanus, The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertpssis (wP). |
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| 1303. |
Which is the sensory receptor involved in detecting blood pressure? |
| A. | Chemo receptor |
| B. | Mechano receptor |
| C. | Photo receptor |
| D. | Magneto receptor |
| Answer» B. Mechano receptor | |
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Explanation: Baroreceptors are sensors located in the blood vessels of all vertebrate animals that sense the blood pressure and relay the information to the brain, so that a proper blood pressure can be maintained. They are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. Mechanore- ceptors are the sensory receptors that respond to any type of primary stimuli of pressure. |
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| 1304. |
Which one of the following is commonly known as Pond Silk'? |
| A. | Spirogyra |
| B. | Rhizopus |
| C. | Yeast |
| D. | Ulothrix |
| Answer» A. Spirogyra | |
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Explanation: Pond silk is the common name of Spirogyra (algae) because it is very slimy in shape. It is also known as pond silk, water silk, pond scum or mermaid's trees because of its bright green silky appearance. Its filaments shine like silk due to the presence of mucilage. |
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| 1305. |
Normal blood pressure reading of an adult human : |
| A. | 80/120 mm Hg |
| B. | 120/80 mm Hg |
| C. | 130/90 mm Hg |
| D. | 160/95 mm Hg |
| Answer» B. 120/80 mm Hg | |
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Explanation: According to the American Heart Association (AHA), normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic pressure of less than 80 mm Hg, or 120/80 mm Hg. Having a blood pressure greater than 140/ 90 mm Hg is considered high blood pressure or hypertension. |
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| 1306. |
The disease which has been eradicated |
| A. | Mumps |
| B. | Measles |
| C. | Small pox |
| D. | Chicken pox |
| Answer» C. Small pox | |
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Explanation: Smallpox was an infectious disease caused by either of two virus variants, Variola major and Variola minor. After vaccination campaigns throughout the 19th and 20th centuries, the WHO certified the global eradication of smallpox in 1979. Smallpox is one of two infectious diseases to have been eradicated, the other being rinderpest which was declared eradicated in 2011. |
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| 1307. |
Xenobiotics which are inherently resistant to microbial attack are called as: |
| A. | Biodegradable |
| B. | Persistent |
| C. | All of the given options |
| D. | Recalcitrant |
| Answer» D. Recalcitrant | |
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Explanation: The compounds that resist biodegradation and thereby persist in the environment are called recalcitrant. The recalcitrant xenobiotic compounds can be grouped into the following six types: (i) halocarbons; (ii) polychlorinated biphenyls; (iii) synthetic polymers; (iv) alkylbenzyl sulphonates; (v) oil mixture and (vi) others. |
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| 1308. |
Water conduction takes place in mosses through – |
| A. | Xylem and Phloem |
| B. | Xylem |
| C. | Collenchyma |
| D. | Parenchyma |
| Answer» D. Parenchyma | |
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Explanation: Botanically, mosses are non- vascular plants that absorb water and nutrients mainly through their leaves and harvest carbon dioxide and sunlight to create food by photosynthesis. They have no vascular system to transport water. They do not have a well- developed xylem. Their conducting tissue is made up of parenchyma. |
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| 1309. |
Companion cells of phloem are found in – |
| A. | Gymnosperms |
| B. | Bryophyta |
| C. | Pteridophyta |
| D. | Angiosperms |
| Answer» D. Angiosperms | |
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Explanation: Only in angiosperms are sieve tubes and companion cells found in the plaloern. In other vascular plants, parenchyma cells function in the same way as companion cells (that is, as the sieve cell's living protoplasm), but they are not derived from the same mother cell as the sieve element. |
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| 1310. |
The vitamin which is very labile and easily destroyed during cooking as well as storage is vitamin – |
| A. | D |
| B. | C |
| C. | B6 |
| D. | K |
| Answer» B. C | |
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Explanation: Vitamin C is quite unstable when cooked or stored huproperly. It is very liable and easily destroyed during cooking as well as storage. It is most susceptible to heat destruction. |
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| 1311. |
'Survival of the fittest' was coined by – |
| A. | Darwin |
| B. | Lamarck |
| C. | Mendel |
| D. | Weismarm |
| Answer» A. Darwin | |
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Explanation: The 'survival of the fittest' quotation is attributed to Charles Darwin. He said, "It is not the strongest or the most intelligent who will survive but those who can best manage change:" However, Herbert Spencer first used the phrase after reading Charles Darwin's On the Origin of Species - in his Principles of Biology (1864). |
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| 1312. |
To conserve coral reefs, the Government of India declared one of the following as Marine Park |
| A. | Gulf of Kutch |
| B. | Lakshadweep Islands |
| C. | Gulf of Mannar |
| D. | Andaman Islands |
| Answer» A. Gulf of Kutch | |
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Explanation: For the protection of coral reefs, the Gulf of Kutch was declared Marine National Park under the provisions of the Wildlife (protection) Act, 1972. It is the first national marine park of India. |
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| 1313. |
The special modified epiderniai cells surrounding stomatal pore are called - |
| A. | Epithelial cells |
| B. | Guard cells |
| C. | Subsidiary cells |
| D. | Accessory cells |
| Answer» B. Guard cells | |
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Explanation: The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the opening. Guard cells are specialized cells in the epidermis of leaves, stems and other organs that are used to control gas exchange. |
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| 1314. |
Blood cancer is commonly known as – |
| A. | Leucoderma |
| B. | Leukaemia |
| C. | Haemophilia |
| D. | Sickle-cell. anaemia |
| Answer» B. Leukaemia | |
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Explanation: Leukemia is a cancer of blood and bone marrow. When a person has leukemia, the body makes too many white blood cells (leukocytes). The causes of most types of leukemia are not known. In general, all cancers have a breakdown in the normal way cell division is controlled. |
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| 1315. |
The hardest natural substance is - |
| A. | Diamond |
| B. | Iron |
| C. | Graphite |
| D. | Copper |
| Answer» A. Diamond | |
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Explanation: Diamond is the hardest naturally occurring substance found on Earth. It is due to the giant molecular structure of diamond in which each carbon atom is covalently bonded to four other carbon atoms |
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| 1316. |
Which of the following is the main thinking part of the human brain? |
| A. | Hind-brain |
| B. | Cerebellum |
| C. | Mid-brain |
| D. | Fore-brain |
| Answer» D. Fore-brain | |
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Explanation: Fore Brain is the main thinking part of the brain and controls the voluntary actions. |
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| 1317. |
The non-green heterotrophic plants of plant kingdom are - |
| A. | mosses |
| B. | ferns |
| C. | algae |
| D. | fungi |
| Answer» D. fungi | |
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Explanation: Animals and non-green plants cannot prepare their own food and depend directly or indirectly on green plants for their nutrition. This mode of nutrition is called heterotrophic nutrition. Fungi are nonchlorophyllos. They should be classified as animals because of their heterotrophic mode of nutrition. But, they are classified under plant kingdom as they have many plant characters. |
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| 1318. |
Which gland in the human body regulates the secretion of hormones from the pituitaiy gland? |
| A. | Thymus gland |
| B. | Thyroid gland |
| C. | Adrenal gland |
| D. | Hypothalamus gland |
| Answer» D. Hypothalamus gland | |
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Explanation: Hormone secretion from the anterior pituitary gland is regulated by releasing hormones secreted by the hypothalamus. Neuro- endocrine cells in the hypothalamus project axons to the median eminence, at the base of the brain. At this site, these cells can release substances into small blood vessels that travel directly to the anterior pituitary gland |
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| 1319. |
In which of the following multiple epidermis is found? |
| A. | Boerhaavia |
| B. | Amaranthus |
| C. | Helianthus |
| D. | Nelium |
| Answer» D. Nelium | |
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Explanation: It is assumed that protodermal cells divide periclinally in certain cases to form multiseriate or multiple epidermis. The multiple epidermis is found in some organs like roots of orchids (Vanda), leaves of Ficus, Nerium, Piperomia, etc. In Nerium, it is found on both surfaces |
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| 1320. |
Transpiration through leaves is called as |
| A. | Cauline transpiration |
| B. | Foliar transpiration |
| C. | Cuticular transpiration |
| D. | Lenticular transpiration |
| Answer» B. Foliar transpiration | |
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Explanation: Most of the transpiration occurs through foliar surface or surface of the leaves. It is known as foliar transpiration. Foliar transpiration accounts for over 90% of the total transpiration. |
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| 1321. |
What are the folds found in the mucous lining of the empty stomach? |
| A. | Typhlosole |
| B. | Areolae |
| C. | Rugae |
| D. | Villi |
| Answer» C. Rugae | |
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Explanation: The inner layer of the stomach is full of wrinkles known as rugae (or gastric folds). Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion. |
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| 1322. |
Name the Japanese art of miniaturisation of trees. |
| A. | Bonsai |
| B. | Kirigami |
| C. | Origami |
| D. | Ikebana |
| Answer» A. Bonsai | |
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Explanation: Bonsai is the art of aesthetic miniaturization of trees and plants in containers. A bonsai plant is not a dwarf plant but equal to the full sized flowering plant. The main objective of bonsai plants is to create'a tree or plant, and even landscapes, in miniature. |
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| 1323. |
Which one of the following is not a photosynthetic pigment? |
| A. | Chlorophyll |
| B. | Phycobilin |
| C. | Carotenoid |
| D. | Arthocyanin |
| Answer» D. Arthocyanin | |
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Explanation: There are three basic classes of photosynthetic pigments: Chlorophylls (greenish pigments), Carotenoids (usually red, orange, or yellow pigments) and Phycobilins (water-soluble pigments found in the cytoplasm). Anthocyartins play no part in photosynthesis |
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| 1324. |
A clone is a group of individuals obtained through – |
| A. | Hybridisation |
| B. | Micropropagation |
| C. | Cross pollination |
| D. | Self pollination |
| Answer» B. Micropropagation | |
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Explanation: Micropropagation is the practice of rapidly multiplying stock plant material to produce a large number of progeny plants, using modern plant tissue cultore methods. It leads to the production of plants that are clones of each other. It often produces more robust plants, leading to accelerated growth compared to similar plants produced by conventional methods - like cuttings. |
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| 1325. |
What does the word 'amphibian' means? |
| A. | Three lives |
| B. | Four lives |
| C. | Two lives |
| D. | One lives |
| Answer» C. Two lives | |
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Explanation: The word amphibian means two- lives. Amphibians spend their lives in the water and on land. All amphibians begin their life in water with gills and tails; as they grow, they develop lungs and legs for their life on land. Members of this animal class are frogs, toads, etc. |
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| 1326. |
Molybdenum deficiency affects the activity of – |
| A. | All of the given options |
| B. | Chlorate reductase |
| C. | Nitrogenase |
| D. | Nitrate reductase |
| Answer» D. Nitrate reductase | |
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Explanation: Numerous investigators have shown that nitrate nitrogen accumulates in higher plants and fungi which are deficient in molybdenum. In molybdenum-deficient plants grown in the presence of nitrate, molybdenum is required for the synthesis of nitrate reductase. Molybdenum deficiency results in the decrease of free amino acids in the plants in comparison to normal plants. |
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| 1327. |
When one gene pair hides the effect of the other unit, the phenomenon is referred to as: |
| A. | Epistasis |
| B. | Mutation |
| C. | None of the options |
| D. | Dominance |
| Answer» A. Epistasis | |
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Explanation: Epistasis refers to the phenomenon in which one gene hides the effect of the other. In other word, it does not allow the other gene to express itself. This is counterpart of dominance. While dominance works at inter allelic but intragenic level, Epistasis works at inter generic level. Epistasis is of following types: • Due to a recessive allele: A hides the effect of B, • Due to a dominant allele: A hides the effect of B. This may be in one direction only meaning that ei-ther A hides the effect of B or vice versa. |
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| 1328. |
Which of the following is commonly used in preparing custard powder? |
| A. | raagi |
| B. | wheat |
| C. | maize |
| D. | rice |
| Answer» C. maize | |
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Explanation: Custard powder is primarily made up of thickeners that give the pudding its texture. It is primarily made from edible maize starch or corn flour. Corn-starch is great for thickening liquids, dissolves easily and is almost foolproof. The powder also contains flavorings such as vanilla. |
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| 1329. |
Excretion in Hemichordates takes place by – |
| A. | Glomerulus |
| B. | Pronephron |
| C. | Mesortephron |
| D. | Metanephron |
| Answer» A. Glomerulus | |
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Explanation: The glomerulus functions as an excretory organ in hemichordates. Soluble wastes are collected from the blood by the glomerulus, lying within the proboscis cavity, and excreted from that cavity through a dorsal pore (an opening on the upper side) to the outside. |
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| 1330. |
The highest concentration of urea is found in – |
| A. | Hepatic portal vein |
| B. | Dorsal aorta |
| C. | Hepatic vein |
| D. | Renal vein |
| Answer» C. Hepatic vein | |
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Explanation: The liver produces urea and other waste materials and then it pours it all in the right ventricle of the heart for oxygenation. The heart then distributes the blood to various parts of the body. So the impure blood brought by the Hepatic Vein and other blood vessels gets distributed through the aorta. This clearly indicates that hepatic vein carries the largest amount of urea, while the renal vein carries the least. |
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| 1331. |
'Mission Indradhanush' Campaign in India is associated with – |
| A. | Nutrition to Pregnant Women |
| B. | Awareness of Diabetes |
| C. | Eradication of blindness |
| D. | Vaccination of children |
| Answer» D. Vaccination of children | |
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Explanation: Mission Indradhanush is a government of India initiative to ensure full immunization of all children in India. It aims to immunize all children under the age of 2 years, as well as all pregnant women, against seven vaccine preventable diseases of diphtheria, whooping cough, tetanus, poliomyelitis, tuberculosis, measles and Hepatitis B. |
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| 1332. |
Which cell disorder in our body is responsible for colour blindness? |
| A. | WBC |
| B. | Cone cell |
| C. | Red Cell |
| D. | Neuron |
| Answer» B. Cone cell | |
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Explanation: Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cellsare one of three types of photoreceptor cells in the retina of the human eye that is responsible for colour vision and function best in relatively bright lights. |
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| 1333. |
Which cell organelle is the site of photosynthesis and also contains chlorophyll? |
| A. | chloroplasts |
| B. | vacuole |
| C. | cytoplasm |
| D. | nucleolus |
| Answer» A. chloroplasts | |
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Explanation: Chloroplast, found in plant cells, is the site of photosynthesis in plants to prepare food (glucose) for the plant with the use of energy. It is a green plastid that contains chlorophylls a and b that absorb visible lightenergy and convert it to usable chemical energy in photosynthesis. |
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| 1334. |
Highest source of air pollution in the world is – |
| A. | Automobiles |
| B. | Industries |
| C. | Household wastes |
| D. | Aircraft |
| Answer» A. Automobiles | |
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Explanation: According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution. |
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| 1335. |
What is commonly known as 'white plague'? |
| A. | Typhoid |
| B. | Malaria |
| C. | Tuberculosis |
| D. | Plague |
| Answer» C. Tuberculosis | |
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Explanation: Tuberculosis was known as the white death and the great white plague during the 19th century. Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis (MTB). It can occur in any organ of the body but is most well known in the lung. |
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| 1336. |
Which of the digestive organs contains acid? |
| A. | Stomach |
| B. | Small intestine |
| C. | Appendix |
| D. | Colon |
| Answer» B. Small intestine | |
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Explanation: Gastric acid, gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). Gastric acid plays a key role indigestion of proteins, by activating digestive enzymes. |
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| 1337. |
Haemophilia is a kind of disease which is |
| A. | viral |
| B. | bacterial |
| C. | hereditary |
| D. | fungal |
| Answer» C. hereditary | |
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Explanation: Hemophilia A and hemophilia B are inherited in an X-linked recessive pattern. The genes associated with these conditions are located on the X chromosome, which is one of the two sex chromosomes. |
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| 1338. |
The largest gland in the Human body is |
| A. | Liver |
| B. | Pancreas |
| C. | Kidney |
| D. | Pituitary |
| Answer» A. Liver | |
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Explanation: The liver is the largest gland and the largest internal organ in the human body. |
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| 1339. |
Which of the following green house gases has the greatest heat trapping ability? |
| A. | Chlorofluoro carbon |
| B. | Methane |
| C. | Carbon dioxide |
| D. | Nitrous oxide |
| Answer» A. Chlorofluoro carbon | |
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Explanation: Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap heat in the atmosphere. Carbon dioxide is used as the base for all the calculations, so its global warming potential is 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere. |
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| 1340. |
What is a Pepper plant? |
| A. | Bush |
| B. | Shrub |
| C. | Vine |
| D. | Tree |
| Answer» C. Vine | |
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Explanation: Pepper plant is a vine. It is a climber and hence it needs support of some other plant (called standard) to climb. Pepper plants have long, vigorous vines and can reach twelve to fifteen feet high. The plants need a strong trellis or structure to scramble over. In addition to its culinary value, pepper makes a lovely houseplant with its glossy, evergreen leaves. |
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| 1341. |
Among the following which one lays eggs and does not produce young ones directly? |
| A. | Echidna |
| B. | Kangaroo |
| C. | Porcupine |
| D. | Whale |
| Answer» A. Echidna | |
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Explanation: Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female's belly. |
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| 1342. |
The sigmoid colon is a part of – |
| A. | Small Intestine |
| B. | Large Intestine |
| C. | Pharynx |
| D. | Rectum |
| Answer» B. Large Intestine | |
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Explanation: The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. Its functionis to expel solid and gaseous waste from the gastrointestinal tract. |
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| 1343. |
The connective tissue that connects a muscle to a bone is – |
| A. | Cartilage |
| B. | Ligament |
| C. | Tendon |
| D. | Interstitial fluid |
| Answer» C. Tendon | |
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Explanation: A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone. |
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| 1344. |
BCG is vaccine meant for protection against which of the following diseases? |
| A. | Mumps |
| B. | Tuberculosis |
| C. | Leprosy |
| D. | Tetanus |
| Answer» B. Tuberculosis | |
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Explanation: Bacillus Calmette-Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis. The vaccine was originally developed from Mycobacterium bovis which is commonly found in cows. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system, |
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| 1345. |
What is cultivation of trees, in dwarf form? |
| A. | Bonsai |
| B. | Ikebana |
| C. | Dwarfism |
| D. | Etiolation |
| Answer» A. Bonsai | |
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Explanation: Bonsai is the Japanese art of growing dwarf trees. By contrast with other |
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| 1346. |
What are Aldehydes? |
| A. | Mild oxidising agents |
| B. | Strong oxidising agents |
| C. | Strong reducing agents |
| D. | Mild reducing agents |
| Answer» C. Strong reducing agents | |
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Explanation: Aldehydes are organic chemical compounds that include a-carbonyl group (i.e. an oxygen atom attached to a carbon atom by a double covalent bond) and a hydrogen atom attached to the carbon atom of the carbonyl group: The presence of that hydrogen atom makes aldehydes very easy to oxidize. Or, put another way, they are strong reducing agents. |
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| 1347. |
Pneumonia affects which of the following organs of human body? |
| A. | Kidneys |
| B. | Lungs |
| C. | Throat |
| D. | Liver |
| Answer» B. Lungs | |
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Explanation: Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli. |
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| 1348. |
Which of the following fibres is considered as the stron est natural fibre? |
| A. | Cotton |
| B. | Jute |
| C. | Wool |
| D. | Silk |
| Answer» D. Silk | |
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Explanation: Ultrastrong spider silk is one of the toughest natural fibers known in nature. The light, flexible fiber is five times stronger by weight than high-grade steel and extremely stretchy, enlarging to snag incoming insects and other prey. |
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| 1349. |
Potato is a – |
| A. | Root |
| B. | Stem |
| C. | Bud |
| D. | Fruit |
| Answer» B. Stem | |
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Explanation: Potatoes are examples of tubers : the swollen ends of stolons that may store starch. It is a stem because it has many nodes called eyes with spaces between eyes known as internodes. Potato tubers develop at the end of swollen underground stem structures, rhizomes. Eyes of potatoes are really axillary buds which contain several small buds at each site. These buds can expand to form shoots which grow on to make whole plants. |
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| 1350. |
What is contained in Chlorophyll? |
| A. | Sodium |
| B. | Potassium |
| C. | Manganese |
| D. | Magnesium |
| Answer» D. Magnesium | |
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Explanation: The basic structure of a chlorophyll molecule is a porphyrin ring, coordinated to a central atom. This is very similar in structure to the heme group found in hemoglobin, except that in heme the central atom is iron, whereas in chlorophyll it is magnesium. This was discovered in 1906, and was the first time that magnesium had been detected in living tissue. |
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