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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 651. |
Identify the incorrectly matched pair.(a) I -131 — Causes thyroid cancer(b) Sr - 90 — Causes bone cancer(c) Radon — Causes lung cancer(d) None of the above |
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Answer» Answer is : (d) I -131 causes thyroid cancer Sr - 90 causes bone cancer Radon causes lung cancer All are the components of radioactive pollution. Hence, all the options are correctly matched. |
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| 652. |
In Najas and Zostera, the type of pollination is called hypohydrophily because in these plants,(a) the pollination occurs by a whirlpool created in water(b) the pollination occurs in submerged plants(c) the pollination occurs in floating plant(d) Both (a) and (c) |
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Answer» Answer is : (b) the pollination occurs in submerged plants Plants which occur below the water level are called submerged plants. When pollination occurs in these plants, it is called hypohydrophily. where pollination occurs by agency of water. |
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| 653. |
Which of the following is an occupational respiratory disorder ? (1) Anthracis(2) Silicosis(3) Botulism(4) Emphysema |
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Answer» Correct option (2) Silicosis Explanation Silicosis is an occupational respiratory disorder which is caused due to excessive inhalation of silica dust. It usually affects the workers of grinding or stone breaking industries. The long-term exposure can cause lung fibrosis (or stiffening), Ieading to breathing difficulties. Anthracis or Anthrax is a bacterial infection caused by Bacillus anthracis. Botulism is food poisoning infection caused by Clostridium botulinum. Its symptoms include diarrhoea, vomiting, abdominal distention, etc. Emphysema is a lung disease, that damages the air sacs and causes shortness of breath. It may be caused by smoking, deficiency of enzymes alpha- 1-antitrypsin and air pollution. |
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| 654. |
Inner linning of intestine, stomach and gall bladder is composed of :– [a] simple cuboidal epithelium [b] simple squamous eptihelium [c] compound epithelium [d] simple columnar epithelium |
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Answer» Correct option [d] simple columnar epithelium |
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| 655. |
The blood of cockroach contains no respiratory pigement. It means that :–(a) cockroach does not respire(b) respiration is anaerobic(c) O2 goes directly into tissues by diffusion(d) O2 goes into t issue by intracellular capillary system |
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Answer» Correct option (c) O2 goes directly into tissues by diffusion |
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| 656. |
Red tide is caused by :–(a) Gonyaulux (b) Noctiluca(c) Certium (d) all of these |
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Answer» Correct option (a) Gonyaulux |
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| 657. |
The function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to : [a] convert atmospheric N2 to NH3 [b] convett ammonia to nitrite [c] transport oxygen for activity of nitorgenase [d] protect nitrogenase from oxygen |
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Answer» Correct option [d] protect nitrogenase from oxygen |
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| 658. |
Colour of urine is yellow due to the pigment :–(a) urochromogen (b) urochrome(c) carotene (d) none of these |
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Answer» Correct Option (b) urochrome |
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| 659. |
Sex is determined in human beings :–[a] by ovum at the time of fertilization[b] by sperm at the time of fertilization[c] 40 days after fertilization[d] seven to eight weeks after fertilization |
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Answer» Correct option [b] by sperm at the time of fertilization |
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| 660. |
Cell wall of bacteria is made up of :–[a] Polysaccharides [b] lipids[c] proteins [d] all of these |
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Answer» Correct option [d] all of these |
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| 661. |
In a dosiventral leaf, location of palisade tissue and phloem respectively are :–[a] adaxial & abaxial [b] abaxial & adaxial[c] adaxial & adaxial [d] abaxial & abaxial |
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Answer» Correct option [a] adaxial & abaxial |
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| 662. |
Increase in temperature of a gas filled in a container would lead to :(1) Increase in its mass(2) Increase in its kinetic energy(3) Decrease in its pressure (4) Decrease in intermolecular distance |
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Answer» Due to increase in temperature of gas in container ..pressure in container will increase But for gas container is closed and hence no change in volume The correct option is (2) Increase in its kinetic energy. Explanation: Increase in temperature would lead to the increase in kinetic energy of gas (assuming far as to be ideal) as U = F/2 nRT Hence energy increases as the temperature is rose . It increases the activity o the molecule as they gain any energy. which in case here is the heat energy. The rise in temperature increases the vibrational energy of the molecule resulting in the increased movement of the atoms or molecules. In turn they will collide with surface walls and it will impart more energy to atoms or molecules hence increasing the overall kinetic energy of the atoms or molecules. |
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| 663. |
Vitamin B–12 also called cobalmin is a water soluble vitamin with a peryoline the normal functioning of the brain and nervous system and for the formation of blood. Deficiency of vitamin B–12 causes : (a) scurvey (b) bery-bery (c) night blindness (d) None of these |
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Answer» Correct option (b) bery-bery Explanation: Vitamin B–12 also called cobalamin is a water-soluble vitamin with a key role in the rormal functioning of the brain and nervous system and for the formation of blood. Deficiencyof vitamin B– 12 causes bery-bery disease. |
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| 664. |
A compound A is obtained by reaction between first member of 1st group element and lightest element of periodic table, then correct statement about compound A is :(a) A is acidic in nature(b) A is basic in nature(c) A is amphoteric in nature(d) A turns blue litmus paper red |
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Answer» Correct Option (b) A is basic in nature Explanation : Lightness element of periodic table = H First member of 1st group of periodic table = Li Compound = LiH Metal hydrides donates H⊙ ion, hence act as a base. |
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| 665. |
XeF6 is colourless crystalline solid. It undergoes hydrolysis in water. The final product obtained is an explosive solid. This explosive solid will be : (a) XeO3 (b) XeO (c) XeO2 (d) Xe |
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Answer» Correct Option (a) XeO3 Explanation: XeF6 + 3H2O ———> XeO3 + 6HF Xenon hexafluoride on hydrolysis produces XeO3. |
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| 666. |
Electron gain enthalpy increases across the period and decreases down the group. Which of the following order of electron gain enthalpy is correct ?(a) F < Cl < Br < I (b) F < Cl > Br > I(c) I > Br > F < Cl (d) I < Cl < Br > F |
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Answer» Correct Option (b) F < Cl > Br > I Explanation : As we known electron gain enthalpy decreases down the group. Hence, the order should be F > Cl > Br > I but correct order of electron gain enthalpy is F < Cl > Br > I due to small size of Fathom. It requires high energy to become F by accepting electrons. |
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| 667. |
Which of these nitrogen-fixing bacteria does not live in symbiotic association with host plant?(a) Rhizobium(b) Azotobacter(c) Frankia(d) Xanthomonas |
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Answer» Answer is : (b) Azotobacter Azotobacter, a free-living nitrogen-fixing bacterium does not form any association with the host plant. Rhizobium, Frankia, Xanthomonas are symbiotic nitrogen-fixing bacteria that live in a mutualistic association with the host plant. These live in small knob-like protuberances known as nodules. |
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| 668. |
Identify the incorrectly matched pair.(a) Physical xerophytes – Soils which are physically dry(b) Physiological xerophytes – Soils having sufficient water(c) Both (a) and (b)(d) None of the above |
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Answer» Answer is : (d) Options (a) and (b) both are correctly matched. The physical xerophytes are plants that grow in soils which are physically dry due to the shortage of water. Physiological xerophytes are plants that grow in soils having sufficient water but it is not available to the plants due to high salt concentration. |
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| 669. |
What will happen if corpora allata is removed from the body of cockroach?(a) Digestion will not occur(b) It will become sterile(c) It will become adult(d) It will become blind |
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Answer» Answer is : (c) It will become adult In cockroach, corpora allatum is an endocrine gland which generates juvenile hormone. It plays a crucial role in metamorphosis. Removal of the corpora allata can cause immature larva to pupate at its next molt, resulting in miniature adult. |
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| 670. |
In the mouth parts of cockroach, the galea and lacinia form parts of the :–[a] mandible [b] maxila[c] labium [d] labrum |
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Answer» Correct option [b] maxila |
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| 671. |
How many Barr bodies would you expect to find in cells of female with Turner's syndrome :–[a] Nil [b] One [c] Two [d] Three |
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Answer» Correct option [a] Nil |
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| 672. |
Ammonia reacts with a-ketoglutaric acid to form :–[a] succinic acid [b] glutamic acid[c] malic acid [d] fumaric acid |
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Answer» Correct option [b] glutamic acid |
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| 673. |
Accordate to the human genome project, select the incorrect statement : (a) The goal of HGP was to identity or determine 3 billion chemical base pair (b) It was launched in 1980 2 completed in 1990 (c) Two major approaches involved i.e., ESTs (Expressed Sequence Tags) and sequence annotation (d) SNPs or single nucleotide polymorphism occur in humans |
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Answer» Correct Option (b) It was launched in 1980 2 completed in 1990 |
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| 674. |
Which one is obtained by acetylation of morphine(a) Charas (b) Cocaine (c) Smack (d) Crack |
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Answer» Correct Option (c) Smack |
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| 675. |
Which among the following is not a prokaryote ?(1) Saccharomyces(2) Mycobacterium(3) Nostoc (4) Oscillatoria |
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Answer» The correct option is(1) Saccharomyces Explanation: Among the given options, Saccharomyces is a fungus, i.e. it is a eukaryote. They possess a well-defined nucleus and other cell organelles. Nostoc and Oscillatioria arc cyanobacteria while Mycobacterium is a true bacterium. Cyanobacteria and bacteria both are prokaryotes as they lack a well-defined nucleus and other cell organelles. |
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| 676. |
In a growing population of a country,(a) reproductive and pre-reproductive individuals are equal in number(b) reproductive individuals are less than the post-reproductive individuals(c) pre-reproductive individuals are more than the reproductive individuals(d) pre-reproductive individuals are less than the reproductive individuals |
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Answer» The correct option is(c) pre-reproductive individuals are more than the reproductive individuals Explanation: In a growing population. younger population (or pre-reproductive individuals) size is larger than that of reproductive individuals. Such a population is represented by a triangular-shaped age pyramid. Whereas. the equal number of reproductive and pre-reproductive individuals represents a stable population and the age pyramid is bell-shaped. Less number of pre-reproductive individuals than reproductive individuals represents declining population and age pyramid appears urn-shaped. The similar case is seen when reproductive individuals are less than the post-reproductive individuals. |
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| 677. |
Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively ?(1) Inflammation of bronchioles; Decreased respiratory surface(2) Increased number of bronchioles; Increased respiratory surface(3) Increased respiratory surface; Inflammation of bronchioles(4) Decreased respiratory surface; Inflammation of bronchioles |
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Answer» The correct option is(1) Inflammation of bronchioles; Decreased respiratory surface Explanation: Asthma is inflammation of bronchioles. Its symptoms include wheezing, coughing and difficulty in breathing mainly during expiration. Emphysema is an inflation or abnormal distension of the bronchioles or alveolar sacs of the lungs. Many of the septa between the alveoli are destroyed and much of the elastic tissue of the lungs is replaced by connective tissue. As a result, alveolar septa collapse and the surface area get greatly reduced. |
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| 678. |
All of the following are included in 'Ex-situ conservation' except(1) Wildlife safari parks(2) Sacred groves(3) Botanical gardens(4) Seed banks |
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Answer» The correct option is(2) Sacred groves Explanation: Sacred groves is a mode of in situ conservation in which forest fragments of varying size are protected by religious communities. It helps to protect the biota of that area on site. On the other hand, botanical gardens, seed banks, and wildlife safari parks are examples of ex situ conservation in which the biota is protected outside its natural habitat. |
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| 679. |
Which one of the following statements is correct?(a) Horsetails are gymnosperms(b) Selaginella is heterosporous, while Salvinia is homosporous(c) Ovules are not enclosed by ovary wall in gymnosperms(d) Stems are usually unbrancned in both Cycas and Cedrus. |
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Answer» The correct option is(c) Ovules are not enclosed by ovary wall in gymnosperms Explanation: In gymnosperms, ovules are not enclosed by ovary wall. Seeds do not occur inside a fruit. They are naked. Horsetail is the common name of Equisetum. Pteridophyte s like Selaginella and Salvinia are heterosporous and possess two types of spores, i.e. microspores and megaspores. Cycas has an unbranched columnar stem while Cedrus possess branched stem. Therefore, only statement (c) is correct. |
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| 680. |
A disease caused by an autosomal primary nondisjunction is :(1) Klinefelter's Syndrome(2) Turner's Syndrome(3) Sickel Cell Anemia(4) Down's Syndrome |
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Answer» The correct answer is (4) Down’s syndrome is caused by nondisjunction of 21st chromosome i.e. Trisomy |
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| 681. |
The contraceptive 'SAHELI'(a) is an IUD(b) increases the concentration of estrogen and prevents ovulation in females(c) blocks estrogen receptors in the uterus, preventing eggs from getting implanted(d) is a post-coital contraceptive |
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Answer» The correct option is(c) blocks estrogen receptors in the uterus, preventing eggs from getting implanted Explanation: The contraceptive 'SAHELI' blocks estrogen receptors in the uterus preventing eggs from getting implanted. It is a type of mini pill that contains a nonsteroidal preparation centchroman. It is taken once in a week after an initial intake of twice a week dose for 3 months. This non-hormonal preparation contains progestin-only and no estrogen. It modulates the estrogen receptors selectively and has high contraceptive value. |
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| 682. |
Which of the following is not a human X - linked trait?(a) Hunter syndrome(b) Duchenne muscular dystrophy(c) G - 6 - PD deficiency(d) Pattern baldness |
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Answer» Answer is : (d) Pattern baldness Pattern baldness is a autosomal trait in humans. The trait may be displayed by both males and females, but the expression of these genes is dependent on the hormonal constitution of the individual. Muscular dystrophy is a genetic disorder characterised by progressive skeletal muscle weakness. It involves mutated X - chromosome gene. G - 6 - PD deficiency syndrome and Hunter syndrome are also due to X - linked inheritance. |
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| 683. |
Which cells on grass leaves help in minimising cuticular transpiration :–(a) Guard cells(b) Bulliform cells(c) Subsidiary cells(d) Endodermal cells |
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Answer» Correct option (b) Bulliform cells |
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| 684. |
Which one of the following population interactions is widely used in medical science for the production of antibiotics ?(1) Commensalism(2) Mutualism(3) Parasitism(4) Amensalism |
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Answer» The correct option is(4) Amensalism Explanation: Amensalism is widely used in medical science for the production of antibiotics. It involves, the secretion of chemicals called allochemics by one microbial group to harm other microbes, e.g., penicillium secretes chemicals to inhibit the growth of Staphylococcus bacteria. These chemicals can be used in medical science for the production of antibiotics. On the other hand, no such chemicals are secreted in parasitism, mutualism, and commensalism. |
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| 685. |
Select the mismatch :(1) Rhodospirillum - Mycorrhiza(2) Anabaena - Nitrogen fixer(3) Rhizobium - Alfalfa(4) Frankia - Alnus |
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Answer» The correct answer is (1) Rhodospirillum is facultative anaerobe and free living nitrogen fixer. Mycorrhiza showsymbiotic relationship between fungi and roots of higher plants. |
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| 686. |
Artificial selection to obtain cows yielding higher milk output represents :(1) Directional as it pushes the mean of the character in one direction(2) Disruptive as it splits the population into two, one yielding higher output and the other lower output(3) Stabilizing followed by disruptive as it stabilizes the population to produce higher yielding cows(4) Stabilizing selection as it stabilizes this character in the population |
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Answer» The correct answer is (1) Artificial selection to obtain cow yielding higher milk output will shift the peak to one direction, so this represents an example of Directional selection. In stabilizing selection, the organisms with the mean value of the trait are selected. In disruptive selection, both extremes get selected. |
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| 687. |
Which of the following are found in extreme saline conditions ?(1) Eubacteria(2) Cyanobacteria(3) Mycobacteria(4) Archaebacteria |
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Answer» The correct answer is (4) Archaebacteria are able to survive in harsh conditions due to the presence of branched lipid chain in cell membrane that reduces fluidity of cell membrane. It include halophiles which are exclusively found in saline habitats. |
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| 688. |
The stage during which separation of the paired homologous chromosomes begins is(1) Pachytene(2) Diplotene(3) Diakinesis(4) Zygotene |
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Answer» The correct option is(2) Diplotene Explanation: The separation of the paired homologous chromosomes begins in dlplotene stage. In this phase, the dissolution of synaptonemal complex begins. The recombined homologous chromosomes of the bivalents separate from each other except at the sites of crossovers. Zygotene is the second state of prophase I of meiosis. It is associated with the formation, of synapsis. Next stage is pachytene during which crossing over occurs between non-sister chromatids of the homologous chromosomes. Diakinesis is the final stage of meiotic prophase-I. This is marked by terminalisation of chiasmata. |
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| 689. |
Which two functional groups are characteristic of sugars?(a) Carbonyl and phosphate(b) Carbonyl and methyl(c) Hydroxyl and methyl(d) Carbonyl and hydroxyl |
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Answer» The correct option is(d) Carbonyl and hydroxyl Explanation: Sugars are chemically carbohydrates. They are polyhydroxy aldoses, ketoses, and their condensation products. Aldoses bear a terminal aldehyde or -CHO group while ketoses have an internal ketone or -CO group. Thus, they possess two functional groups, i.e. carbonyl and hydroxyl. |
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| 690. |
If the cold junction of a thermocouple is lowered then the neutral temperature : (a) decreases (b) Increases (c) remains the same (d) approaches inversion temperature |
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Answer» Correct option (c) remains the same Explanation: The neutral temperature of a given thermocouple is independent of temperature of cold juction. |
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| 691. |
Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produces normal pollen tube because ;– [a] laser beam stimulates pollen germination and pollen tube growth [b] the laser beam does not damage the region from which pollen tube emerges [c] the contents of killed generative cell permits germination and pollen tube growth [d] the vegetative cells has not been damaged |
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Answer» Correct option [d] the vegetative cells has not been damaged |
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| 692. |
In the reaction CH3CHO + HCN → CH3CH(OH)CN, a chiral centre is produced. This product is(a) dextrorotatory (b) racemic mixture(c) meso compound (d) laevorotatory. |
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Answer» The correct option is (b). Explanation: As during the reaction, a chiral carbon is created and further since the CN- ion can attack the planer aldehyde group both from the top and the bottom face of the aldehyde group with equal case, therefore, a 50-50 mixture of the two enantiomers, that is, a racemic mixture is obtained. |
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| 693. |
Which of the following is an amino acid derived hormone ?(1) Epinephrine(2) Ecdysone(3) Estradiol(4) Estriol |
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Answer» The correct option is(1) Epinephrine Explanation: Among the following, epinephrine is an amino acid derived hormone. It is a catecholamine which is produced in the chromaffin cells of adrenal medulla from amino acids tyrosine. On the other hand, estradiol and estriol are steroid hormone that is involved in the regulation of estrous and menstrual cycles. Ecdysone is also a steroid hormone that controls molting in insects. |
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| 694. |
Stomatal movement is not affected by (1) temperature (2) light (3) O2 concentration (4) CO2 concentration |
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Answer» Stomatal movement is not affected by the O2 concentration. Only light, temperature and concentration of CO2 affect stomatal movement. |
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| 695. |
Identify the vertebrate group of animals characterized by crop and gizzard in its digestive sytstem.(1) Amphibia(2) Reptilia(3) Aves(4) Osteichthyes |
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Answer» The correct option is(3) Aves Explanation: Crop and gizzard. are found in the digestive tract of birds (Aves). Crop helps in storage and softening of food particles whereas gizzard (muscular stomach) helps in its crushing and churning. |
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| 696. |
Which are the first organs to develop in a human embryo?(a) Heart and blood vessels(b) Eyes and ears(c) Brain and spinal cord(d) Mouth and tongue |
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Answer» Answer is : (c) Brain and spinal cord In humans, in week 3, the neural tube develops and the brain and spinal cord begin to develop. |
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| 697. |
The angle between vectors (A x B) and (B x A) is :-(a) Zero (b) π (c) π/ 4 (d) π/ 2 |
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Answer» Correct Option (b) π |
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| 698. |
The dimension of Rydberg constant is :–(a) [T-1](b) [L-1](c) [M-1](d) [M0L0T0] |
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Answer» Correct Option (b) [L-1] |
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| 699. |
A quantity y is related to another quantity x by the equation y = kxa when 'K' and 'a' are constants. If percentage error in the measurement of x is P, then that in y depends upon :–(a) K and a (b) x and a(c) P and a (d) P, K and a all |
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Answer» Correct Option (c) P and a |
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| 700. |
The nuclei 147N and 136C can be described as :(a) Isobars (b) Isotones(c) Isotopes of carbon (d) Isotopes of nitrogen |
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Answer» Correct Option (b) Isotones Explanation : As, 136C and 147N have same number of neutrons A, 13 – 6 = 7 for C and 14 – 7 = 7 for N |
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