McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 851. |
The gas used for artificial ripening of green fruit is - |
| A. | ethane |
| B. | ethylene |
| C. | carbon dioxide |
| D. | acetylene |
| Answer» B. ethylene | |
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Explanation: Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener. |
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| 852. |
Which of the following is a rich source of carbohydrates, proteins and fats? |
| A. | Bean |
| B. | Rice |
| C. | Groundnut |
| D. | Gram |
| Answer» B. Rice | |
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Explanation: Rice is about 90 percent carbohydrate, 8 percent protein and 2 percent fat, so Rice is having all three nutrients. |
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| 853. |
The importance of perspiration is to – |
| A. | Eliminate body odours |
| B. | Improve the general health |
| C. | Open the pores in the skin |
| D. | Regulate body temperature |
| Answer» D. Regulate body temperature | |
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Explanation: The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature receptors located throughout the body and makes physiological adjustments to maintain a constant core temperature. Perspiration lowers body temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy. |
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| 854. |
A disease caused by fungus is – |
| A. | Round worm |
| B. | Ringworm |
| C. | Tapeworm |
| D. | Filaria |
| Answer» B. Ringworm | |
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Explanation: Derrnatophytosis or ringworm is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep and cattle. The fungi that cause parasitic feeci on kerac. |
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| 855. |
The organ which stores carbohydrates as glycogen in the human body is - |
| A. | Intestine |
| B. | Stomach |
| C. | Pancreas |
| D. | Liver |
| Answer» D. Liver | |
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Explanation: Glycogen is a multi-branched polysaccharide that serves as a form of energy storage in animals and fungi. In humans, glycogen is made and stored primarily in the cells of the liver and the muscles, and functions as the secondary long-term energy storage (with the primary energy stores being fats held in adipose tissue). |
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| 856. |
Haemoglobin is an important constituent of – |
| A. | Red blood cells |
| B. | White blood cells |
| C. | Platelets |
| D. | Plasma |
| Answer» A. Red blood cells | |
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Explanation: Hemoglobin is the iron- containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs to the rest of the body where it releases the oxygen to burn nutrients to provide energy to power the functions of the |
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| 857. |
In which of the following animals, is open circulatory system found? |
| A. | Prawn |
| B. | Earthworm |
| C. | Toad |
| D. | Man |
| Answer» A. Prawn | |
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Explanation: The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system. |
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| 858. |
Blood fails to clot white flowing in the blood vessel because of the presence of - |
| A. | Hepatin |
| B. | Prothrombin |
| C. | liaemoglobin |
| D. | Iltrudin |
| Answer» A. Hepatin | |
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Explanation: Heparin also known as un- fractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule. |
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| 859. |
Commonest mammal is – |
| A. | Elephant |
| B. | Lion |
| C. | Man (ho*mo sapiens) |
| D. | Panther |
| Answer» C. Man (ho*mo sapiens) | |
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Explanation: Commonest mammal is human being. |
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| 860. |
What is the impact of advancing glaciers on the rings of trees? |
| A. | They become concentric |
| B. | Their shape is distorted |
| C. | They become widely spaced |
| D. | They are immune to this change |
| Answer» B. Their shape is distorted | |
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Explanation: Advancing glaciers distort the shape of the rings of trees. |
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| 861. |
The sweet taste of fruits is due to – |
| A. | Lactose |
| B. | Fructose |
| C. | Maltose |
| D. | Ribose |
| Answer» B. Fructose | |
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Explanation: The monosaccharides responsible for sweet taste in fruit is fructose. |
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| 862. |
Wings of a bird and an insect are – |
| A. | Homologous organs |
| B. | Analogous organs |
| C. | Vestigial organs |
| D. | Rudimentary organs |
| Answer» B. Analogous organs | |
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Explanation: Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan. |
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| 863. |
Primary source of vitamin-D for human beings is – |
| A. | citrus fruits |
| B. | green vegetables |
| C. | yeast |
| D. | Sun |
| Answer» D. Sun | |
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Explanation: Sources of vitamin D include biosynthesis through the actions of ultraviolet light in the skin and through the diet as ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3). |
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| 864. |
A mother of blood group O has a group O child. What could be the blood group of father of the child? |
| A. | Only O |
| B. | A or B or O |
| C. | A or B |
| D. | Only AB |
| Answer» B. A or B or O | |
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Explanation: 0 |
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| 865. |
Which of the following is an endemic species? |
| A. | Horn bill |
| B. | Indian Rhino |
| C. | Pink head duck |
| D. | Nicobar pigeon |
| Answer» A. Horn bill | |
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Explanation: The Malabar Grey Hornbill is a hornbill that is endemic to the Western Ghats and associated hills of southern India. They are found mainly in dense forest and around rubber, arecanut or coffee plantations. |
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| 866. |
The type of tail found in Shark is – |
| A. | Protocercal |
| B. | Homocercal |
| C. | Heterocercal |
| D. | Diphycercal |
| Answer» C. Heterocercal | |
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Explanation: Sharks possess a heterocercal caudal fin in which the dorsal portion is usually noticeably larger than the ventral portion. This is because the shark's vertebral column extends into that dorsal portion, providing a greater surface area for muscle attachment. |
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| 867. |
The Sigmoid Colon is part of – |
| A. | Small Intestine |
| B. | Anal Canal |
| C. | Large Intestine |
| D. | Ileum |
| Answer» C. Large Intestine | |
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Explanation: The sigmoid colon is a short curving of the colon, just before the rectum. It is part of the large intestine. |
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| 868. |
Which of the following plant pigments absorbs in red and far-red region of light? |
| A. | Carotenoide |
| B. | Chlorophyll |
| C. | Phytochrome |
| D. | elyptochrome |
| Answer» C. Phytochrome | |
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Explanation: Phytochrorne is a photoreceptor, a pigment that plants use to detect light. It is a protein with a bilin chromophore. It detects mainly red and far-red region of the visible spectrum and regulates germination of seeds. |
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| 869. |
Air quality depicting PM- 2.5 is more hazardous to – |
| A. | Archaeological. Monuments |
| B. | National Parks |
| C. | Botanical Gardens |
| D. | Old Men and Women |
| Answer» D. Old Men and Women | |
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Explanation: Fine particles known as PM-10 and PM-2.5 can penetrate deep into the lungs, creating health problems. People with heart or lung diseases, older adults, and children are most likely to have problems because of contact with particle pollution. Short-term exposure to PM among pregnant women has been associated with prematurity and growth retardation. |
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| 870. |
Human Environment Conference-1972 was held at – |
| A. | Stockholm |
| B. | Paris |
| C. | Geneva |
| D. | Australia |
| Answer» A. Stockholm | |
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Explanation: The conference was held in Stockholm, the capital of Sweden, in 1972. Theconference is widely recognized as the beginning of modern political and public awareness of global environmental problems. |
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| 871. |
Which among the following parts of a plant is involved in gaseous exchange? |
| A. | Stomata |
| B. | Lenticels |
| C. | Vacuoles |
| D. | Stomata & Lenticels |
| Answer» D. Stomata & Lenticels | |
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Explanation: Plants obtain the gasesthey need through their leaves. They require oxygen for respiration and carbon dioxide for photosynthesis. |
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| 872. |
Which one of the following is the respiratory pigment in man? |
| A. | Haernocyanin |
| B. | Haemoerythrin |
| C. | b-Carotene |
| D. | Haemoglobin |
| Answer» D. Haemoglobin | |
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Explanation: A respiratory pigment is a molecule, such as hemoglobin in humans, which increases the oxygencarrying capacity of the blood. The four most common invertebrate respiratory pigments are hemoglobin, haemocyanin, haemerythrin and chlorocruorin. |
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| 873. |
Kalaazar is transmitted by – |
| A. | tsetse fly |
| B. | housefly |
| C. | anopheles mosquito |
| D. | sand fly |
| Answer» D. sand fly | |
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Explanation: Kala-azar is a chronic and potentially fatal parasitic disease of the viscera (the internal organs, particularly the liver, spleen, bone marrow and lymph nodes) which is transmitted by sand fly bites in parts of Asia (primarily India), Africa (primarily Sudan) and South America. It is transmitted by the bite of female sandflies. |
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| 874. |
Green manure is obtained from – |
| A. | Fresh animal excreta |
| B. | Decomposing green legume plants |
| C. | Domestic vegetable waste |
| D. | Oil seed husk cakes |
| Answer» B. Decomposing green legume plants | |
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Explanation: Green manure is obtained from decomposing green legume plants. |
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| 875. |
Typhoid fever is caused by – |
| A. | Bacterium |
| B. | Fungi |
| C. | Protozoa |
| D. | Virus |
| Answer» A. Bacterium | |
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Explanation: 0 |
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| 876. |
The lockjaw is a pathological condition of |
| A. | Diphtheria |
| B. | Polio |
| C. | Paralysis |
| D. | Tetanus |
| Answer» D. Tetanus | |
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Explanation: The lockjaw is a pathological condition of tetanus. Clostridium tetani bacteria are responsible for tetanus. Main symptoms of tetanus spasms of muscles and convulsions, lockjaw. |
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| 877. |
Which of the following amphibians lacks tongue? |
| A. | Sphenodon |
| B. | Salamander |
| C. | Ichthyophis |
| D. | Necturus |
| Answer» C. Ichthyophis | |
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Explanation: Ichthyophis lacks tongue. It is sometimes called the Asian caecilians. It is limbless amphibian. |
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| 878. |
What is the other name for Vitamin B2? |
| A. | Thiamine |
| B. | Haemoglobin |
| C. | Riboflavin |
| D. | Dextrose |
| Answer» C. Riboflavin | |
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Explanation: Riboflavin, also known as vitamin B2 is an easily absorbed colored micronutrient with a key role in maintaining health in humans and animals. It plays a key role in energy metabolism, and for the metabolism of fats, ketone bodies, carbohydrates, and proteins. |
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| 879. |
Cockroach cannot survive in the water because its respiratory organ is - |
| A. | Gill |
| B. | Trachea |
| C. | Book lung |
| D. | Pulmonary Sac |
| Answer» B. Trachea | |
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Explanation: In tetrapod anatomy, the trachea or windpipe, is a tube that connects the pharynx and larynx to the luhgs, allowing the passage of air. It is lined with pseudo-stratified ciliated columnar epithelium cells with goblet cells that produce mucus. This mucus lines the cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward the larynx and then the pharynx where it can be either swallowed into the stomach or expelled as phlegm. |
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| 880. |
The example of hermaphrodite animal in which cross fertilization occurs is - |
| A. | Hydra |
| B. | Ascaris |
| C. | Earthworm |
| D. | Silkworm |
| Answer» A. Hydra | |
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Explanation: Cross fertilization occurs in Hydra. The spermatozoa released from the testis of one Hydra swim about in water with their tails and finally come into contact with the ovum of another Hydra. Only one spermatozoon penetrates the ovum and fertilizes it. This results in the formation of a zygote which is diploid. |
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| 881. |
Meningitis is a disease which affects the |
| A. | Kidneys |
| B. | Liver |
| C. | Heart |
| D. | Brain |
| Answer» D. Brain | |
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Explanation: Meningitis is inflammation of the protective membranes covering the brain and spinal cord, known collectively as the meninges. The inflammation may be caused by infection with viruses, bacteria, or other microorganisms, and less commonly by certain drugs. |
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| 882. |
Number of teeth which are replaced in man are – |
| A. | 12 |
| B. | 20 |
| C. | 32 |
| D. | 16 |
| Answer» A. 12 | |
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Explanation: Deciduous teeth are the first set of teeth in the growth development of humans and many other mammals. The deciduous teeth are: incisors (4); molars (6); and canine (2). So there are 12 teeth which get replaced by the age of 12 when only permanent teeth remain. |
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| 883. |
The disease that is caused by virus is |
| A. | Typhoid |
| B. | Cholera |
| C. | Common cold |
| D. | Malaria |
| Answer» C. Common cold | |
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Explanation: The common is a viral infectious disease of the upper respiratory tract which affects primarily the nose. Over 200 viruses are implicated in the cause of the common cold; the rhinoviruses are the most common. |
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| 884. |
In plants water is absorbed by the root hairs by a process called: |
| A. | Transpiration |
| B. | Respiration |
| C. | Perspiration |
| D. | Osmosis |
| Answer» D. Osmosis | |
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Explanation: Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant. (through the network of xylem vessels) through a combination of capillary action and "transiprational pull". |
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| 885. |
Which carbohydrate is used in silvering of mirrors? |
| A. | Fructose |
| B. | Sucrose |
| C. | Glucose |
| D. | Starch |
| Answer» C. Glucose | |
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Explanation: Glucose is used in silvering of mirror as a reducing agent. Aldehydes such as glucose reduce Ag+ (aq) ions to metallic silver. They themselves are oxidised to carboxylate ions. |
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| 886. |
The total number of ear bones is – |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
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Explanation: There are three bones in each human ear. The small ear bones are arranged in series, and are known as ossicles. Ear bones are the malleus, or hammer, the incus, or anvil, and the stapes, or stirrup. Together they form a short chain that crosses the middle ear and transmits vibrations caused by sound waves from the eardrum membrane to the liquid of the inner ear. |
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| 887. |
Which one of the following is the most sensitive Indicator of the health of a community? |
| A. | Birth rate |
| B. | Infant mortality rate |
| C. | Death rate |
| D. | Maternal mortality rate |
| Answer» B. Infant mortality rate | |
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Explanation: Infant Mortality Rate (IMR) s most widely accepted as one of the most sensitive indicator of health status of a country/region due to several reasons. The IMR always reflect the overall health scenario of a region/ country. The rate is low in developed countries and high to very high in developing underdeveloped countries. If health infrastructure (preventive and curative infrastructures) of a region of a country is very good, the IMR is always good. |
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| 888. |
Biodegradable wastes can usually be converted into useful substances with the help of - |
| A. | bacteria |
| B. | nuclear proteins |
| C. | radioactive substances |
| D. | viruses |
| Answer» A. bacteria | |
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Explanation: Biodegradable waste is a type of waste, typically originating from plant or animal sources, which may be degraded by other living organisms. |
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| 889. |
In digestion, proteins are converted into |
| A. | Fatty acids |
| B. | Glucose |
| C. | Amino acids |
| D. | Maltose |
| Answer» C. Amino acids | |
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Explanation: Most proteins are decomposed to single amino acids in digestion. Digestion typically begins in the stomach when pepsinogen is converted to pepsin by the action of hydrochloric acid, and continued by trypsin and chymotrypsin in the intestine. Before the absorption in the small intestine, most proteins are already reduced to single amino acid or peptides of several amino acids. |
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| 890. |
Rabies is caused by – |
| A. | bacteria |
| B. | virus |
| C. | fungus |
| D. | algae |
| Answer» B. virus | |
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Explanation: Rabies is a viral disease that causes acute encephalitis in warm-blooded animals. The disease is zoonotic, meaning it can be transmitted from one species to another, such as from dogs to humans, commonly by a bite from an infected animal. |
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| 891. |
fiber is used in making bulletproof vests. |
| A. | Nylon-66 |
| B. | Terylene |
| C. | Kevlar |
| D. | Lexan |
| Answer» C. Kevlar | |
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Explanation: Kevlar, a para-aramid synthetic fiber, is used for making bullet proof vests protective inserts. |
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| 892. |
Which part of the tea plant is used for making tea? |
| A. | root |
| B. | flower |
| C. | Leaves |
| D. | Stem |
| Answer» C. Leaves | |
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Explanation: The tea plant is an evergreen of the Camellia family that is local to China, Tibet, and northern India. Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis. |
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| 893. |
Which one of the following is not a true fish? |
| A. | Shark |
| B. | Starfish |
| C. | Eel |
| D. | Sea-horse |
| Answer» B. Starfish | |
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Explanation: Although sea stars (star fish) live underwater and are commonly called "starfish," they are not fish. They do not have gills, scales, or fins like fish do and they move quite differently from fish. While fish propel themselves with their tails, sea stars have tiny tube feet to help them move along. |
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| 894. |
Which virus from the following combinations is contagious for human beings |
| A. | H5N1 |
| B. | H2N3 |
| C. | H4N1 |
| D. | H4N2 |
| Answer» A. H5N1 | |
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Explanation: A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1”, is the causative agent of H5N1 flu, commonly known as "avian influenza" or 'bird flu". |
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| 895. |
Cuscuta is a – |
| A. | partial stern parasite |
| B. | complete stem parasite |
| C. | partial root parasite |
| D. | complete root parasite |
| Answer» B. complete stem parasite | |
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Explanation: Cuscuta (Dodder) is a genus of about 100-170 species of yellow, orange or red (rarely green) parasitic plants. Dodders are supremely adapted for a life of plunder and pillage. Reduced in form to scrambling and twining threads, they appear to be completely leafless, although closer inspection reveals tiny scale leaves pressed close to the stems. So it is a stern parasite. |
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| 896. |
The element which is required by the plant in large quantity – |
| A. | Calcium |
| B. | Nitrogen |
| C. | Phosphorus |
| D. | Sulphur |
| Answer» B. Nitrogen | |
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Explanation: All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots. |
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| 897. |
Which one of the following gives energy to our body? |
| A. | Vitamins |
| B. | Water |
| C. | Carbohydrates |
| D. | Proteins |
| Answer» C. Carbohydrates | |
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Explanation: Carbohydrates are the body's preferred energy source. One of the advantages of glucose and other carbohydrates is that they can enter into the oxidation process much more quickly and provide energy more rapidly. Fats make energy available at a slower pace than carbohydrates. |
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| 898. |
Which of the following is used for wrapping of fractured bones? |
| A. | White cement |
| B. | White lead |
| C. | Zinc oxide |
| D. | Plaster of Paris |
| Answer» D. Plaster of Paris | |
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Explanation: Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones. |
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| 899. |
Which one of the following is a water borne disease? |
| A. | Diabetes |
| B. | Cholera |
| C. | Small Pox |
| D. | Malaria |
| Answer» B. Cholera | |
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Explanation: Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms. |
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| 900. |
The coding segment of DNA is called in |
| A. | Codon |
| B. | Muton |
| C. | Intron |
| D. | Exon |
| Answer» A. Codon | |
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Explanation: The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts. |
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