McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 801. |
Which one of the following is a mixed fertilizer? |
| A. | Urea |
| B. | CAN |
| C. | Ammonium sulphate |
| D. | NPK |
| Answer» D. NPK | |
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Explanation: A mixed fertilizer is a mixture of two or more straight fertilizers. A mixture of Nitrogen (N), Phosphorus (P) and Potassium (K) or mostly known as NPK, three elements that are critical to plant survival and growth are added to the mixed fertilizer. |
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| 802. |
Which one of the following plants is used for green manuring in India? |
| A. | Wheat |
| B. | Sun hemp |
| C. | Cotton |
| D. | Rice |
| Answer» B. Sun hemp | |
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Explanation: Used as a cover crop, sunn hemp can improve soil properties, reduce soil erosion, conserve soil water, and recycle plant nutrients. |
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| 803. |
In onion the edible part is – |
| A. | Leaf |
| B. | Root |
| C. | Stern |
| D. | Flower |
| Answer» A. Leaf | |
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Explanation: Edible plant stems are one part of plants that are eaten by humans. Most plants are made up of roots, stems, leaves, flowers, buds and produce fruits containing seeds. The edible portion in an onion is swollen leaves with a bit of stem. |
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| 804. |
The heat treatment applied to milk before distribution to stabilize and to remove disease causing bacteria is called as – |
| A. | Pasteurisation |
| B. | Fermentation |
| C. | Coagulation |
| D. | Homogenisation |
| Answer» A. Pasteurisation | |
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Explanation: Pasteurisation is a process of heating milk for 30 minutes at 62° C and cooling rapidly to kill harmful bacteria. |
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| 805. |
Which of the following is a monogenetic parasite? |
| A. | Hydra |
| B. | Fasciola |
| C. | Ascaris |
| D. | Earthworm |
| Answer» C. Ascaris | |
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Explanation: Ascaris is a monogenetic parasite as it completes it life cycle in a single host, i.e., man. |
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| 806. |
Which of the following acids is synthesized in human stomach? |
| A. | Sulphuric acid |
| B. | Nitric acid |
| C. | Hydrochloric acid |
| D. | Phosphoric acid |
| Answer» C. Hydrochloric acid | |
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Explanation: Hydrochloric acid is sythesised in human stomach. |
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| 807. |
Bio-magnification implies - |
| A. | Toxic matters are magnified |
| B. | Living beings are magnified |
| C. | Light is magnified |
| D. | Food is magnified |
| Answer» A. Toxic matters are magnified | |
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Explanation: Biomagnification is the sequence of processes in an crosystem by which higher concentrations of a part ittihir chemical such as the pesticide DDT, are reached in organisms higher up the food chain. |
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| 808. |
Which of the following can be used for biological control of mosquitoes? |
| A. | DDT |
| B. | Gambusia |
| C. | Oil |
| D. | Ointments |
| Answer» B. Gambusia | |
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Explanation: Biological control is the use of natural enemies to manage the mosquito population. Effective biocontrol agent s include predatory fish that teed on mosquito larvae such as Gambusia affinis (mosquitofish) and some cyprinids (Carps and minnows). |
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| 809. |
Haemophilia is a genetic disorder which leads to - |
| A. | decrease in haemoglobin level |
| B. | rheumatic heart disease |
| C. | decrease in WBOC |
| D. | non-clotting of blood |
| Answer» D. non-clotting of blood | |
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Explanation: Haemophilia is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding. |
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| 810. |
In eye donation, which one of the following parts of donor's eye is utilized? |
| A. | Iris |
| B. | Lens |
| C. | Cornea |
| D. | Retina |
| Answer» C. Cornea | |
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Explanation: Generally blindness is caused by the dryness and hardness of cornea. Cornea is a clear layer which helps passing of light. It is an outer layer and can be transfer from one person to another. |
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| 811. |
Blood is a: |
| A. | connective tissue |
| B. | epithelial tissue |
| C. | muscular tissue |
| D. | reproductive tissue |
| Answer» A. connective tissue | |
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Explanation: Blood is considered a connective tissue for two basic reasons: (i) embryologically, it has the same origin (mesodermal) as do the other connective tissue types and (ii) blood connects the body systems together bringing the needed oxygen, nutrients, hormones and other signaling molecules, and removing the wastes. |
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| 812. |
The natural disaster in which carbon- dioxide suddenly erupts from a deep lake water is known as . |
| A. | Lacaustrine |
| B. | Fluvial |
| C. | Glacial |
| D. | Liminic |
| Answer» D. Liminic | |
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Explanation: A limnic eruption, also referred to as a lake overturn, is a rare type of natural disaster in which dissolved carbon dioxide (CO2) suddenly erupts from deep lake water, suffocating wildlife, livestock and humans. Such an eruption may also cause tsunamis in the lake as the rising CO2 displaces water. |
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| 813. |
Conglobate gland is a leaf like structure found in – |
| A. | Female Cockroach |
| B. | Male Cockroach |
| C. | Male Ascaris |
| D. | Female Ascaris |
| Answer» B. Male Cockroach | |
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Explanation: Conglobate gland is a leaf like, median, unbranched gland of male cockroach. It lies below the ejaculatory duct and open into the genital pouch close to the male genital aperture. |
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| 814. |
In the resistance colour code, the fourth band signifies – |
| A. | tolerance level |
| B. | power of ten |
| C. | the total value of resistance |
| D. | the material of the resistor |
| Answer» A. tolerance level | |
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Explanation: The first and second band represent the numerical value of the resistor, and the color of the third band specify the power-of- ten multiplier. Reading the resistor from left to right, the fourth band represents the tolerance. |
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| 815. |
The curcumin is isolated from – |
| A. | Gallic |
| B. | Turmeric |
| C. | Sunflower |
| D. | Rose flower |
| Answer» B. Turmeric | |
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Explanation: Curcumin is the principal curcurninoid of the popular Indian spice turmeric, which is a member of the ginger family. The curcuminoids are natural phenols that are responsible for the yellow color of turmeric. |
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| 816. |
Teeth and Bones acquire strength and rigidity from – |
| A. | Calcim |
| B. | Fluorine |
| C. | Chlorine |
| D. | Sodium |
| Answer» A. Calcim | |
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Explanation: The human body requires more calcium than any other mineral. At least 99% of the calcium is found in the bones and teeth, giving them strength and rigidity. |
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| 817. |
The hormone used as an oral contraceptive is – |
| A. | Cortisone |
| B. | Progesterone |
| C. | Testosterone |
| D. | Aldesterone |
| Answer» B. Progesterone | |
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Explanation: It was discovered relatively long ago (1930's) that injections of progesterone were effective as a contraceptive in preventing pregnancies. Progesterone is used as a Contraceptive for creating a hostile environment for fertilization and not allowing sperm to enter the egg. |
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| 818. |
Transboundary pollution (or) Acid rain is caused by – |
| A. | Carbon monoxide |
| B. | Carbon dioxide |
| C. | Hydrocarbon |
| D. | Nitrogen oxide and sulphur dioxide |
| Answer» D. Nitrogen oxide and sulphur dioxide | |
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Explanation: Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. |
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| 819. |
At which stage in its life cycle, does the silk worm yield the fibre of commerce? |
| A. | Egg |
| B. | Larva |
| C. | Pupa |
| D. | Imago |
| Answer» C. Pupa | |
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Explanation: The eggs hatch into worms in a few weeks, and then the cycle repeats itself. Silkworms go through four stages of developmen |
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| 820. |
Which one of the following is responsible for blue baby syndrome? |
| A. | Fluoride |
| B. | Nitrate |
| C. | Arsenic |
| D. | Lead |
| Answer» B. Nitrate | |
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Explanation: 0 |
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| 821. |
Maximum harm to a tree is caused by |
| A. | loss of half of its leaves |
| B. | loss of all leaves |
| C. | loss of half of its branches |
| D. | loss of its bark |
| Answer» B. loss of all leaves | |
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Explanation: Loss of all leaves lead to maximum harm as the tree loses its ability to perform photosynthesis so necessary for food manufacturing. Besides, loss of its bark will also be dangerous as it is the only part of a tree that is really alive. There is thin layer of cells right under the bark. If the bark is gone that layer dries out and dies. |
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| 822. |
The humidity of air measured in percentage is called – |
| A. | absolute humidity |
| B. | specific humidity |
| C. | relative humidity |
| D. | all of these |
| Answer» C. relative humidity | |
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Explanation: The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density. |
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| 823. |
Which of the following is not an insectivorous plant? |
| A. | Nepenthes |
| B. | Utricularia |
| C. | Drosera |
| D. | Cuscuta |
| Answer» D. Cuscuta | |
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Explanation: Insectivorous plants are : Aldrovanda, Archaeamphora, Brocchinia, Byblis, Catopsis, Dionaea, Drosera, Genlisea, Heliamphora, Nepenthes, Palaeoaldrovanda, Philcoxia, Roridule, Sarracenia, Stylidium, Triphyophyllum, Utricularia etc. |
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| 824. |
The term 'Green Revolution' was coined by – |
| A. | William Gaud |
| B. | Charles Elton |
| C. | Eugene Odum |
| D. | M.S. Swaminathan |
| Answer» A. William Gaud | |
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Explanation: The term 'Green Revolution was first used in 1968 by former United States Agency for International Development (USA1D) Director William Gaud. |
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| 825. |
Filaria is transmitted by – |
| A. | Aedes mosquito |
| B. | Anopheles mosquito |
| C. | Cuiex mosquito |
| D. | Swamp mosquito |
| Answer» C. Cuiex mosquito | |
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Explanation: Aedes mosquito causes dengue fever. Anopheles mosquito causes malaria. Culex mosquito causes filaria. |
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| 826. |
Which is the only mammal that can fly? |
| A. | Whale |
| B. | Bat |
| C. | Hen |
| D. | Lizard |
| Answer» B. Bat | |
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Explanation: Bat is a mammal and it can fly. |
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| 827. |
Plants which flower only once in their life time are known as – |
| A. | polyearpie |
| B. | monocarpie |
| C. | monogamous |
| D. | monogeneric |
| Answer» B. monocarpie | |
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Explanation: Plants that flower and fruit only once and then die are termed monocarpic or semelparous. |
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| 828. |
The larvae of cockroach is called – |
| A. | Caterpillar |
| B. | Nymph |
| C. | Maggot |
| D. | Grub |
| Answer» B. Nymph | |
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Explanation: Cockroaches develop through a process called gradual metamorphosis. This process has three stages: egg, nymph, and adult. |
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| 829. |
Of which tissue nails, hoofs and horns are made of – |
| A. | Cuticle |
| B. | Chitin |
| C. | Keratin |
| D. | Tunicin |
| Answer» C. Keratin | |
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Explanation: Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makesup fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves. |
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| 830. |
Which one of the following vitamins helps in clotting of blood? |
| A. | Vitamin-A |
| B. | Vitamin-B |
| C. | Vitamin-D |
| D. | Vitamin-K |
| Answer» D. Vitamin-K | |
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Explanation: Vitamin K is used by the body to help blood clot. Warfarin (Coumadin) is used to slow blood clotting. |
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| 831. |
Vector of Ka1aczar is : |
| A. | Anopheles mosquito |
| B. | Culex mosquito |
| C. | Tse-Tsefly |
| D. | Sand fly |
| Answer» D. Sand fly | |
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Explanation: Leishmaniasis (Kala azar) is a disease spread by the bite of the female sand fly. This disease is the second-largest parasitic killer in the world (after malaria). The parasite migrates to the internal organs such as liver, spleen (hence 'viscera), and bone marrow, and, if left untreated, will almost always result in the death of the host. |
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| 832. |
Name the vitamin not found in any animal food? |
| A. | Vitamin B12 |
| B. | Vitamin C |
| C. | Vitamin D |
| D. | Vitamin K |
| Answer» B. Vitamin C | |
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Explanation: Vitamin C, also known as ascorbic acid, is a water-soluble vitamin. Unlike most mammals and other animals, humans do not have the ability to make their own vitamin C. Therefore, we must obtain vitamin C through our diet. |
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| 833. |
The largest organ of human body is : |
| A. | Heart |
| B. | Brain |
| C. | Liver |
| D. | Kidney |
| Answer» C. Liver | |
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Explanation: Technically, the largest organ 'in' the body is the liver. Liver is also the heaviest organ, with an average of 1.6 kilograms (3.5 pounds). The largest organ 'of the body is the skin (the skin is 'outside' the body). |
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| 834. |
Fiber diet includes – |
| A. | glycogen |
| B. | proteins |
| C. | cellulose |
| D. | fats |
| Answer» C. cellulose | |
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Explanation: The components of dietary fiber include cellulose, lignin (only non-carbohydrate component of dietary fiber), pectin, chitan, etc. Such fibers increase fecal bulk and speed up the passage of food through the digestive tract. |
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| 835. |
Quinine, the commonly used drug to treat malaria, is obtained from a plant. What part of the plant yields the drug? |
| A. | Leaves |
| B. | Fruits |
| C. | Root |
| D. | Stem bark |
| Answer» D. Stem bark | |
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Explanation: 0 |
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| 836. |
To carry out photosynthesis plants require – |
| A. | Oxygen |
| B. | Carbon-dioxide |
| C. | Nitrogen |
| D. | Hydrogen |
| Answer» B. Carbon-dioxide | |
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Explanation: In photosynthesis, carbon dioxide is converted into sugars in a process calledcarbon fixation. Carbon fixation is a redox reaction, so photosynthesis needs to supply both a source of energy to drive this process, and the electrons needed to convert carbon dioxide into a carbohydrate, which is a reduction reaction. |
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| 837. |
The human heart is enclosed in the – |
| A. | Pericardium |
| B. | Pleura |
| C. | Duramater |
| D. | Conjunctive |
| Answer» A. Pericardium | |
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Explanation: The pericardium is a double- walled sac containing the heart and the roots of the great vessels. It is a tough double layered membrane which covers the heart. The space between the two layers of it is filled with a pericardium fluid which protects the heart from any kind of external jerk or shock. |
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| 838. |
Which of the following is an example of tissue? |
| A. | Brain |
| B. | Blood |
| C. | Liver |
| D. | Stomach |
| Answer» B. Blood | |
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Explanation: Blood is considered a connective tissue for two basic reasons: (1) it has the same origin as do the other connective tissue types and (2) blood connects the body systems together bringing the needed oxygen, nutrients, hormones and other signaling molecules, and removing the wastes. In circulating blood two different cell types are found: enucleated erythrocytes or red blood cells and nucleated leukocytes or white blood cells. |
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| 839. |
The human skeleton contains around – |
| A. | 110 bones |
| B. | 210 bones |
| C. | 150 bones |
| D. | 206 bones |
| Answer» D. 206 bones | |
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Explanation: A typical adult human skeleton consists of 206 bones. Individuals may have more or fewer bones than this owing to anatomical variations |
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| 840. |
Heavy alcohol consuming people generally die of |
| A. | blood cancer |
| B. | cirrhosis |
| C. | liver or stomach cancer |
| D. | weakening of heart muscles leading to cardiac arrest |
| Answer» B. cirrhosis | |
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Explanation: Cirrhosis is scarring of the liver and poor liver function. It is the final phase of chronic liver disease which may result from a history of excess drinking habits. Cirrhosis is most commonly caused by alcoholism, hepatitis B and hepatitis C, and fatty liver disease. |
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| 841. |
Chocolates can be bad for health because of a high content of – |
| A. | cobalt |
| B. | nickel |
| C. | zinc |
| D. | lead |
| Answer» D. lead | |
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Explanation: Chocolate absorbs lead from the environment during production. Recently there has been concern of mild lead poisoning for some types of chocolate. |
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| 842. |
Tuberculosis infection is by means of - |
| A. | Mycobacterium avonin |
| B. | Staphylococcus |
| C. | Mycobacterium tuberculosis |
| D. | Streptococcus |
| Answer» C. Mycobacterium tuberculosis | |
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Explanation: Tuberculosis is a common, and in many cases lethal, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis. Tuberculosis typically attacks the lungs, but can also affect other parts of the body. It is spread through the air. 676. |
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| 843. |
The abnormal constituent of urine is – |
| A. | urea |
| B. | creatinine |
| C. | albumin |
| D. | sodium |
| Answer» C. albumin | |
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Explanation: The tests employed to detect commonly present abnormal constituents are proteins, glucose, ketone bodies, bile pigments, bile salts and blood. The liver synthesizes a type of protein known as albumin. Urine should not contain albumin, as protein molecules are large and so easily get trapped in the kidney's filter and finally they are reabsorbed in the blood stream. |
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| 844. |
The radioactive Strontium-90 causes |
| A. | Brain cancer |
| B. | Skin cancer |
| C. | Lung cancer |
| D. | Bone cancer |
| Answer» B. Skin cancer | |
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Explanation: Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Used mostly in weapons and nuclear power plants, poisoning usually occurs through accidental ingestion. Studies have also linked strontium-90 to various forms of skin cancer in cases where the radiation was absorbed through the skin. |
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| 845. |
What causes common cold? |
| A. | Bacteria |
| B. | Fungi |
| C. | Virus |
| D. | Protozoa |
| Answer» C. Virus | |
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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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| 846. |
The chief raw material used for manufacturing Rayon is : |
| A. | Nylon |
| B. | Cellulose |
| C. | Silicon |
| D. | Radium and Argon |
| Answer» B. Cellulose | |
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Explanation: Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber. |
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| 847. |
Cadmium pollution is associated with |
| A. | Minamata disease |
| B. | Black foot disease |
| C. | Dyslexia |
| D. | Itai-itai |
| Answer» D. Itai-itai | |
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Explanation: Itai-itai disease was the documented case of mass cadmium poisoning in Toyama Prefecture, Japan, starting around 1912. The cadmium poisoning caused softening of the bones and kidney failure. The disease is named for the severe pains caused in the joints and spine. |
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| 848. |
Haemoglobin has highest affinity for – |
| A. | Oxygen |
| B. | Carbon dioxide |
| C. | Carbon monoxide |
| D. | Nitrogen |
| Answer» A. Oxygen | |
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Explanation: Haemoglobin has greatest affinity for oxygen with which it binds readily. The oxygen binding properties of hemoglobin exist because of the interaction between oxygen andthe iron atom of the heme groups and hemoglobin's quaternary structure. |
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| 849. |
Which chromosomal combination is responsible for maleness in man? |
| A. | XO |
| B. | XXX |
| C. | XX |
| D. | XY |
| Answer» D. XY | |
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Explanation: In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. |
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| 850. |
Which one of the following pairs is correctly matched? |
| A. | Tetanus BCG |
| B. | Tuberculosis - ATS |
| C. | Malaria - Chloroquin |
| D. | Scurvy - Thiamine |
| Answer» C. Malaria - Chloroquin | |
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Explanation: Chloroquine prevents the development of malaria parasites in the blood. Doctors use it to both prevent and treat malaria. After the malaria parasite Plasmodium falciparum started to develop widespread resistance to chloroquine,new potential uses of this cheap and widely available drug have been investigated. |
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