McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 1101. |
Which of the following foods gives instant energy to the athletes? |
| A. | Cheese |
| B. | Glucose |
| C. | Ghee |
| D. | Vitamins |
| Answer» B. Glucose | |
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Explanation: During exercise or sports activity, our body relies on glycogen to keep the blood sugar levels stable and thus maintain energy. Glucose gives the body the instant energy it needs to perform at its best. |
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| 1102. |
Trachoma is a disease of the – |
| A. | Liver |
| B. | Eyes |
| C. | Lungs |
| D. | Kidneys |
| Answer» B. Eyes | |
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Explanation: Trachoma is an infectious disease caused by bacterium Chlamydia trachomatis. The infection causes a roughening of the inner surface of the eyelids. This roughening can lead to pain in the eyes, breakdown of the outer surface or cornea of the eyes, and eventual blindness. |
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| 1103. |
The chemical component that is invariably found in all viruses is |
| A. | proteins |
| B. | lipids |
| C. | DNA |
| D. | RNA |
| Answer» A. proteins | |
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Explanation: All viruses contain the following two components: a nucleic acid genome and a protein capsid that covers the genome. Together this is called the nucleocapsid. The proteinous coat surrounds and protects the genetic material. In addition, many animal viruses contain a lipid envelope. The entire intact virus is called the virion. |
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| 1104. |
Which is used as an Air pollution indicator? |
| A. | Algae |
| B. | Fungi |
| C. | Bacteria |
| D. | Lichens |
| Answer» D. Lichens | |
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Explanation: Lichens are used as air pollution indicators, especially of the concentration of sulfur dioxide in the atmosphere. If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found. If the air is clean, shrub-by, hairy and leafy lichens become abundant. |
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| 1105. |
Which one of the following is a carbohydrate? |
| A. | Urea |
| B. | Insulin |
| C. | Glycine |
| D. | Glucose |
| Answer» D. Glucose | |
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Explanation: Glucose, also called dextrose, is one of a group of carbohydrates known as simple sugars (monosaccharides). It is found in fruits and honey and is the major free sugar circulating in the blood of higher animals. It is the most important source of energy for cellular respiration. Glucose is stored as a polymer, in plants as starch and in animals as glycogen. |
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| 1106. |
The source of oxygen in atmosphere is due to – |
| A. | Photosynthesis |
| B. | Excretion |
| C. | Nitrogen fixation |
| D. | Respiration |
| Answer» A. Photosynthesis | |
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Explanation: The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water. The organ-isms that carry out photosynthesis include the plant life of the land areas as well as the phytoplankton of the oceans. 6CO2 + 6H2O + energy —> C6H12O6 + 6O2 |
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| 1107. |
is called as 'Father of Genetics'. |
| A. | Charles Darwin |
| B. | Hugo de Vries |
| C. | Gregor Johann Mendel |
| D. | Jean Baptiste Lamarck |
| Answer» C. Gregor Johann Mendel | |
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Explanation: Gregor Mendel was an Austrian monk who discovered the basic principles of heredity through experiments in his garden. |
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| 1108. |
Quinine is obtained from which of the following Plant? |
| A. | Cinchona |
| B. | Cocoa |
| C. | Mulberry |
| D. | Eucalyptus |
| Answer» A. Cinchona | |
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Explanation: Quinine is a medication used to treat malaria due to Plasmodium falciparum. Chinchona bark is best known as the source of the anti-malarial drug quinine. Cinchona is the national tree of both Peru and Ecuador. |
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| 1109. |
Which enzyme digests proteins in the stomach? |
| A. | Trypsin |
| B. | Pepsin |
| C. | Salivary amylase |
| D. | Pancreatic canal |
| Answer» B. Pepsin | |
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Explanation: Protein digestion begins in the stomach with the action of pepsin. Pepsin is the active protein-digesting enzyme of the stomach. When pepsin acts on the protein molecule, it breaks the bonds that hold the protein molecule together, called peptide bonds. Once broken, peptide bonds yield chains of amino acids linked together called polypeptides that are digested in the small intestine with the help of trypsin, chymotrypsin, and carboxypeptidase. |
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| 1110. |
Fermentation is a type of process. |
| A. | Aerobic Respiration |
| B. | Anaerobic Respiration |
| C. | Exothermic Reaction |
| D. | Transpiration |
| Answer» B. Anaerobic Respiration | |
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Explanation: Fermentation in food processing is the process of converting carbohydrates to alcohol or organic acids using microorganisms—yeasts or bacteria—under anaerobic conditions. It also occurs in oxygen- starved muscle cells, as in the case of lactic acid fermentation. |
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| 1111. |
Name the scientist who proved that plants have life. |
| A. | Mendal |
| B. | Hugo de vries |
| C. | Jagdish Chandra Bose |
| D. | Robert Brown |
| Answer» C. Jagdish Chandra Bose | |
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Explanation: Jagdish Chandra Bose, on 10 May 1901, proved that plants are like any other life form. He also proved that plants have a definite life cycle. |
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| 1112. |
The sexual reproductive organs of aspergillus are – |
| A. | Spermatium and Oogonium |
| B. | Antheridium and Oogonium |
| C. | Spermatium and Ascogonium |
| D. | Antheridium and Ascogonium |
| Answer» D. Antheridium and Ascogonium | |
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Explanation: Sexual reproduction in Aspergillus is rare and takes place in favourable conditfons. Sex organs are produced on the same mycelium which has produced conidia. Male organs are called Antheridium or Pollinoduim and female are called archicarp or Ascogoniurn. Female organs develop as a branch of hypha. The antheridium curves round and bend towards the apex of archicarp as a result of which they become spirally coiled and their tips get fused. |
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| 1113. |
Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? |
| A. | Parthenium |
| B. | Elephant grass |
| C. | Water hycinth |
| D. | Molar grass |
| Answer» C. Water hycinth | |
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Explanation: Water hyacinth (Eichhornia crassipes) is used for purifying not only domestic wastewater but also industrial wastewater. It can readily absorb, accumulate and concentrate heavy metals such as lead, cadmium, mercury and nickel. Other studies have evaluated the potential of water hyacinth to absorb various organic chemicals like phenols and toxaphene. Water hyacinth can remove even radioactive metals from industrial effluents, which is very difficult otherwise. |
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| 1114. |
Name the gas used in preparation of bleaching powder – |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Nitrogen |
| D. | Chlorine |
| Answer» D. Chlorine | |
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Explanation: Bleaching powder in manufactured by passing chlorine gas over dry slaked lime. Bleaching powder is also called calcium chlorohypochlorite be-cause it is considered as a mixed salt of hydrochloric acid and hypochlorous acid. |
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| 1115. |
Rio Summit is associated with – |
| A. | Convention on Biological Diversity |
| B. | Green house gases |
| C. | Ozone depletion |
| D. | Wet lands |
| Answer» A. Convention on Biological Diversity | |
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Explanation: The United Nations Conference on Environment and Development (UNCED), otherwise known as the Earth Summit or Rio Summit, was held in Rio de Janeiro, Brazil, in June 1992. An important achievement of the summit was an agreement on the Climate Change Convention. Besides, the Convention on Biological Diversity was opened for signature at the Rio Summiton 5 June 1992 and entered into force on 29 December 1993. |
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| 1116. |
Which of the following is an airborne disease? |
| A. | Measles |
| B. | Typhoid |
| C. | Pink eye |
| D. | None of the above |
| Answer» A. Measles | |
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Explanation: Airborne diseases are the infections spread by airborne transmissions including Chickenpox, Anthrax, Influenza, Measles, Smallpox, Cryptococcosis and Tuberculosis. |
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| 1117. |
Which one of the following Is also called the ‘powerplants’ of the cell? |
| A. | Golgi body |
| B. | Mitochondrion |
| C. | Ribosome |
| D. | Lysosome |
| Answer» B. Mitochondrion | |
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Explanation: Mitochondria through the process of aerobic respiration, in eukaryotic cells produce ATP (energy currency of the cell). Hence, it is known as ‘powerplant of the cell'. |
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| 1118. |
A universal donor has the blood group |
| A. | B |
| B. | AB |
| C. | A |
| D. | O |
| Answer» D. O | |
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Explanation: Individuals with type O blood are often called universal donors. They can receive blood only from a group O individual, but can donate blood to individuals of any ABO blood group (i.e., A, B, O or AB). |
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| 1119. |
The enzyme which catalyzes the unwinding of DNA helix during replication is: |
| A. | Primase |
| B. | Topoisomerase |
| C. | Helicase |
| D. | DNA polymerase |
| Answer» C. Helicase | |
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Explanation: A type of helicase enzyme called DNA helicase catalyzes the unwinding of the DNA helix at the time of replication. It uses the energy released through hydrolysis of ATP (Adenosine triphosphate) to break the hydrogen bonds between the two strands. The enzyme is needed to separate the two strands of DNA also during transcription and DNA repair. |
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| 1120. |
Blue Revolution is related to: |
| A. | Space research |
| B. | Poultry |
| C. | Drinking water |
| D. | Fisheries |
| Answer» B. Poultry | |
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Explanation: Blue Revolution means the adoption of a package programme to increase the production of fish and marine products. The Blue Revolution in India was started in 1970 during the Fifth Five-Year Plan when the Central Government sponsored the Fish. Farmers Development Agency (FFDA). It is related to fish. breeding, fish rearing, fish marketing, and fish ex-port. |
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| 1121. |
Scurvey is caused by: |
| A. | Vitamin 'D' |
| B. | Vitamin 'A' |
| C. | Vitamin 'C' |
| D. | Vitamin 'B' |
| Answer» C. Vitamin 'C' | |
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Explanation: Scurvy is a disease resulting from a deficiency of vitamin C (ascorbic acid). It is sometimes also referred to as Barlow's disease, named after Sir Thomas Barlow, a British physician who described it in 1883. Scurvy can be prevented by consuming enough vitamin C, either in the diet or as a supplement. |
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| 1122. |
Linseed is obtained from – |
| A. | Castor |
| B. | Flax |
| C. | Groundnut |
| D. | Sesame |
| Answer» B. Flax | |
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Explanation: Linseed are the seeds of the flax plant, which are the source of linseed oil and linseed cake. Flax is a member of the genus Linum in the family Linaceae. Linseed is one of the most potent sources of omega 3 fatty acids found in nature. |
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| 1123. |
Which of the following organism possesses characteristics of a plant and an animal? |
| A. | Euglena |
| B. | Mycoplasma. |
| C. | Paramecium |
| D. | Chlorella |
| Answer» A. Euglena | |
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Explanation: Most species of Euglena have photosynthesizing chloroplasts within the body of the cell, which en-able them to feed by autotrophy (making energy-containing organic molecules from inorganic raw material through the use of an energy source such as sun-light), like plants. However, they can also take nourishment heterotrophically (making use of food that comes from other organisms in the |
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| 1124. |
Which one of the following features is absent in a virus? |
| A. | reproduce within host cell |
| B. | presence of cell wall |
| C. | fully parasitic in nature |
| D. | presence of either DNA or |
| Answer» B. presence of cell wall | |
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Explanation: A virus has a simple structure. It has no internal cellular structure, no cell wall or cell membrane, just the protein coat that holds the string of nucleic acid. It is made only of a nucleic acid + a protein coat. A cell wall is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea. |
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| 1125. |
The colour of the carrots is due to the presence of – |
| A. | Carotene |
| B. | Chlorophyll |
| C. | Phycocyanin |
| D. | Phycoerythirn |
| Answer» A. Carotene | |
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Explanation: Carotenes are photosynthetic pigments that are responsible for the orange colour of the carrot, for which this class of chemicals is named. Some carrots are yellow due to Anthocyanins. Carotenes are also responsible for the orange (but not all of the yellow) colours in dry foliage. |
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| 1126. |
Name the vitamin whose deficiency causes excessive bleeding? |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin K |
| D. | Vitamin C |
| Answer» C. Vitamin K | |
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Explanation: Vitamin K is a group of |
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| 1127. |
Study of old age is called – |
| A. | Gerantalogy |
| B. | Pedology |
| C. | Ornithology |
| D. | Anthropology |
| Answer» A. Gerantalogy | |
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Explanation: Gerontology is the study of the aging process itself. Geriatrics is sometimes called medical gerontology. |
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| 1128. |
Which of the following is also used as a Bio fertilizer? |
| A. | Rhizobium |
| B. | Azotobactar |
| C. | Azospirillum |
| D. | All of the above |
| Answer» D. All of the above | |
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Explanation: Rhizobium, Azotobacter, Azospirillum and blue green algae are traditionally used as Bio fertilizers. |
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| 1129. |
Wings of birds and insects are – |
| A. | Xenologous |
| B. | Homologous |
| C. | Paralogous |
| D. | Analogous |
| Answer» D. Analogous | |
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Explanation: Wings of birds and insects are analogous struetures used for flight in both types of organisms. But, they have no common ancestral origin at the beginning of their evolutionary development. They show similar function but show no similar structural relationship. |
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| 1130. |
With which one of the following Jacobsons organ is related to? |
| A. | Vision |
| B. | Chewing |
| C. | Smelling |
| D. | Hearing |
| Answer» C. Smelling | |
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Explanation: Jacobson's organ, also called vomeronasal organ, is a patch of sensory cells within the main nasal chamber that detects heavy moisture-borne odour particles. It is a "sense of smell" receptor that is actually not receptive to ordinary odors. |
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| 1131. |
Oxyntic cell is meant for the secretion of |
| A. | Pepsin |
| B. | Enterokinase |
| C. | Hydrochloric acid |
| D. | Lactic acid |
| Answer» C. Hydrochloric acid | |
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Explanation: Parietal cells (also known as oxyntic cells), are the epithelial cells that secrete hydrochloric acid (HCL) and intrinsic factor. These cells are located in the gastric glands found in the stomach. They contain an extensive secretory network from which the HCL is secreted by active transport into the stomach. |
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| 1132. |
The most suitable soil for the production of cotton is – |
| A. | Black lava soil |
| B. | Alluvial soil |
| C. | Loamy soil |
| D. | Well drained soil |
| Answer» A. Black lava soil | |
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Explanation: Black soil is most suitable for the cultivation of cotton. The deep and medium black lava soil of the Deccan and Malwa plateaus is considered ideal, though it can be grown on alluvial 'and red soil as well. The black cotton soil is also known as regur. |
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| 1133. |
Chromosorne designation of Turner sydrorne is : |
| A. | 44A+XO |
| B. | 44A+XXX |
| C. | 44A+XXY |
| D. | 44A+XYY |
| Answer» A. 44A+XO | |
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Explanation: Turner syndrome is a rare chromosomal disorder characterized by partial or complete loss (monosomy) of one of the X chromosomes that affects females. Individuals with Turner syndrome have only 45 chromosomes, including just a single X chromosome. This monosomic has a chromosome complement of 44 autosomes and one X chromosome (44+XO). The abnormal condition probably originates from exceptional egg or sperm with no X chromosome. |
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| 1134. |
Rusting is the process of – |
| A. | Oxidation |
| B. | Reduction |
| C. | Decomposition |
| D. | Displacement |
| Answer» A. Oxidation | |
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Explanation: Rust is the process of iron (molecules) oxidizing into iron oxide, or rust. General formula of rust is Fe2O3.nH2O |
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| 1135. |
Enzymes are - |
| A. | Steroids |
| B. | Carbohydrates |
| C. | Proteins |
| D. | Lipids |
| Answer» C. Proteins | |
| Explanation: Enzymes are proteins that speed up chemical reactions in the cell. They are highly selective catalysts, greatly accelerating both the rate and specificity of metabolic reactions. Most enzymes are proteins, although some catalytic RNA molecules have been identified. | |
| 1136. |
The plant that behaves as a root parasite is - |
| A. | Ficus |
| B. | Santalum |
| C. | Cuscuta |
| D. | Euphorbia |
| Answer» C. Cuscuta | |
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Explanation: Plants which either obtain readymade organic food prepared by other plants or absorb water and minerals from other plants to prepare their own organic food are called parasitic plants. Cuscuta (Doddar) is a total stem parasite. |
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| 1137. |
Which of the following is the basic characteristic of a living organism? |
| A. | Ability to breathe |
| B. | Ability to reproduce |
| C. | Ability to move |
| D. | Ability to eat |
| Answer» A. Ability to breathe | |
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Explanation: Living beings are systems or organisms that tend to respond to changes in their environment and in-side themselves, in such a way as to promote their own continuation and longevity. They have the ability to breathe or respire move or navigate and the ability to multiply. Living organisms include human beings, plants, insects, animals among others. |
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| 1138. |
Myopia is a disease connected with – |
| A. | Lungs |
| B. | Brain |
| C. | Ears |
| D. | Eyes |
| Answer» D. Eyes | |
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Explanation: Myopia, commonly known as nearsightedness, is a vision condition in which close objects are seen clearly, but objects' farther away appear blurred. It occurs if the eyeball is too long or the cornea, the clear front cover of the eye has too much curvature. Concave lenses or corrective surgery is used to correct this defect. |
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| 1139. |
Dumb-bell shaped guard cells are present in – |
| A. | Groundnut |
| B. | Gram |
| C. | Wheat |
| D. | Mango |
| Answer» C. Wheat | |
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Explanation: Guard cells are dumb-bell shaped in monocots such as wheat. The central portion of the guard cells in wheat is narrow and two ends are bulbous. Guard cells are surrounded by adjacent subsidiary cells. |
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| 1140. |
Which lobe of human brain is associated with hearing – |
| A. | Frontal lobe |
| B. | Parietal lobe |
| C. | Temporal lobe |
| D. | Occipital lobe |
| Answer» C. Temporal lobe | |
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Explanation: The Temporal Lobes, located on each side of the head above the ears, control hearing and are related to smell, taste and short- term memory. |
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| 1141. |
If the stomach did not produce any hydrochloric acid, which enzyme will not function? |
| A. | Ptyalin |
| B. | Rennin |
| C. | Pepsin |
| D. | Lipase |
| Answer» C. Pepsin | |
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Explanation: Hydrochloric acid converts pepsinogen into an enzyme called pepsin. When food enters the stomach, hydrochloric acid production increases and the pH may fall to as low as 1 or 2, a very acidic condition. |
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| 1142. |
The environment includes – |
| A. | Abiotic factors |
| B. | Biotic factors |
| C. | Oxygen and Nitrogen |
| D. | Abiotic and Biotic factors |
| Answer» D. Abiotic and Biotic factors | |
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Explanation: An environment encompasses all living (biotic) and non-living things (abiotic) occurring naturally on Earth. It consists of plants, animals and micro-organisms (biotic factors) in an area functioning together with all of the non-living physical (abiotic) factors. |
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| 1143. |
Rhizobium is a kind of – |
| A. | Photosynthetic bacteria |
| B. | Symbiotic bacteria |
| C. | Parasitic bacteria |
| D. | Saprophytic bacteria |
| Answer» B. Symbiotic bacteria | |
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Explanation: Rhizobia are soil bacteria that fix nitrogen after becoming established inside root nodules of legumes. They are the only nitrogen- fixing bacteria living in a symbiotic relationship with legumes. Common crop and forage legumes are peas, beans, clover, and soy. |
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| 1144. |
Polyploidy arises due to change in the |
| A. | number of chromatids |
| B. | structure of genes |
| C. | number of chromosomes |
| D. | structure of chromosomes |
| Answer» C. number of chromosomes | |
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Explanation: An organism having more than two sets of homologous chromosomes is known as polyploid and the phenomenon polyploidy. Polyploidy refers to a numerical change in a whole set of chromosomes. Polyploidy may occur due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis. |
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| 1145. |
The large startery in human body is – |
| A. | Aorta |
| B. | Capillaiy |
| C. | Vena cava |
| D. | Pulmonary vein |
| Answer» A. Aorta | |
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Explanation: The aorta is the largest artery of the human body. It is an artery that directly arises from the heart itself and descends through the thorax and into the abdomen. All the arteries of the body, save the pulmonary arteries, stem from the aorta or one of its main branches. |
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| 1146. |
The tree species most commonly used in social forestry is – |
| A. | Peepal |
| B. | Gulmohar |
| C. | Eucalyptus |
| D. | Mango |
| Answer» C. Eucalyptus | |
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Explanation: Eucalyptus, Acacia, Polar, etc are some of the most commonly used tree species in social forestry. This is because Eucalyptus helpsmeet increasing wood demands from dwindling natural forests, supplying local communities and industry alike. Eucalyptus first became a component of India's social forestry program in the 1970s. With financial assistance from the World Bank, large tracts of forest lands, farms, and degraded land in the Indian states of Karnataka, Gujarat, Uttar Pradesh, Punjab and Haryana were planted with eucalyptus. |
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| 1147. |
The most productive ecosystem in the biosphere is – |
| A. | Desert |
| B. | Open Ocean |
| C. | Estuary |
| D. | Tundra |
| Answer» C. Estuary | |
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Explanation: Ecotone regions (transitional zones) like mangroves, wetlands, estuaries, grasslands etc. have far greater productivity compared to natural ecosystems like forest ecosystem, ocean ecosystem, pond ecosystem, riverine ecosystem, desert ecosystem etc. This is because of the wide-ranging species from the adjacent ecosystems being present in the ecotone. Also, an estuary has very little wave action, so it provides a calm refuge from the open sea and hence becomes ideal for the survival of numerous aquatic species. Estuaries are most heavily populated areas through-out the world, with about 60% of the world's population living along estuaries and the coast. |
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| 1148. |
Panthera Pardus is the scientific name of – |
| A. | Leopard |
| B. | Tiger |
| C. | Lion |
| D. | Panther |
| Answer» A. Leopard | |
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Explanation: Panthera pardus is the scientific name of leopard, one of the five "big cats" in the genus Panthera. |
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| 1149. |
The plant cell will shrink when placed in |
| A. | An isotonic solution |
| B. | Hypertonic solution |
| C. | Hypotonic solution |
| D. | Water |
| Answer» B. Hypertonic solution | |
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Explanation: If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis: pressure decreases to the point where the protoplasm of the cell peels away from the cell wall, leaving gaps between the cell wall and the membrane and making the plant cell shrink and crumple. |
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| 1150. |
Bacterial decomposition of biological material under anaerobic condition is – |
| A. | fermentation |
| B. | fertilization |
| C. | contamination |
| D. | composting |
| Answer» A. fermentation | |
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Explanation: Fermentation is the process by which complex organic compounds, such as glucose, are broken down by the action of enzymes into simpler com-pounds in the absence of oxygen (anaerobic). Yeasts can convert sugars to alcohol and carbon dioxide by fermentation. Fermentation is used to produce wine, beer, yogurt and other products. |
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