InterviewSolution
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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.
| 1. |
Restriction endonucleases are enzymes which:A. make cuts at specific positions within the DNA moleculeB. recognize a specific nucleotide sequence for binding of DNA ligaseC. restrict the action of the enzyme DNA polymeraseD. remove nucleotides from the ends of the DNA molecule |
| Answer» Correct Answer - A | |
| 2. |
An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be havingA. High stability and low resilienceB. Low stability and low resilienceC. High stability and high resilienceD. Low stability and high resilience |
| Answer» Correct Answer - D | |
| 3. |
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis isA. Spermatogonia-spermatid-spermatocyte- spermsB. Spermatocyte-spermatogonia-spermatid- spermsC. Spermatogonia-spermatocyte-spermatid- spermsD. Spermatid-spermatocyte-spermatogonia- sperms |
| Answer» Correct Answer - 3 | |
| 4. |
Which of the following species contains three bond pair and one lone pair around the central atom ?A. `NH_(2)^(-)`B. `PCl_(3)`C. `H_(2)O`D. `BF_(3)` |
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Answer» Correct Answer - B `Cl-underset(Cl)underset(|)overset(* *)P-Cl` |
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| 5. |
Limiting molar conductivity of `NH_(4)OH` [i.e., `Lambda_(m)^(@)(NH_(4)OH)`] is equal to:A. `A_(m)^(@) (NH_(4)OH) +A_(m)^(@)(NH_(4)Cl)-A_(m)^(@)(HCl)`B. `A_(m)^(@) (NH_(4)Cl) +A_(m)^(@)(NHOH)-A_(m)^(@)(NaCl)`C. `A_(m)^(@)(NH_(4)Cl)+A_(m)^(@)(NaCl)-A_(m)^(@)(NaOH)`D. `A_(m)^(@)(NAOH)+A_(m)^(@)(NaCl)-A_(m)^(@)(NH_(4)Cl)` |
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Answer» Correct Answer - B `NH_(4)Cl+NaOH to NH_(4)OH+NaCl` `pi_(m_(NH_(4)Cl))+pi_(m_(NaOH))-pi_(m_(NaCl))=pi_(m_(NH_(4)OH))` |
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| 6. |
The `-OH` group of an alcohol or of the `-COOH` group of a carboxylic acid can be replaced by `-Cl` usingA. Hypochlorous acidB. ChlorineC. Hydrochloric acidD. Phosphorous pentachloride |
| Answer» Correct Answer - A | |
| 7. |
Which of the following orders of acid strength is correct?A. RCOOH gt ROH gt HOH gt HC `-=` CHB. RCOOH gt HOH gt ROH gt HC `-=` CHC. RCOOH gt HOH gt HC `-=` CH gt ROHD. RCOOH gt HC `-=` CH gt HOH gt ROH |
| Answer» Correct Answer - B | |
| 8. |
The correct order of reactivity towards the electrophilic substitiution of the compounds aniline(I),benzene(II) and nitro-benzene(III) isA. III gt II gt IB. II gt III gt IC. I lt II gt IIID. I gt II gt III |
| Answer» Correct Answer - D | |
| 9. |
Which one of the following compounds will be most readily dehydrated?A. B. C. D. |
| Answer» Correct Answer - B | |
| 10. |
Among the following four compounds (a) Phenol (b) methyl phenol (c) metanitrophenol (d) paranitrophenol the acidity order is –A. `c gt d gt a gt b`B. `a gt d gt c gt b `C. `b gt a gt c gt d `D. `d gt c gt a gt b` |
| Answer» Correct Answer - D | |
| 11. |
Which of the following conformers for ethylene glycol is most stable?A. B. C. D. |
| Answer» Correct Answer - C | |
| 12. |
Glycerol on being heated with an excess of `HI` producesA. allyl iodideB. propeneC. glycerol triiodideD. 2-iodopropane |
| Answer» Correct Answer - D | |
| 13. |
The `IUPAC` name of the compound `CH_(3)CH=CHC-=CH` isA. Pent - 3 - en - 1 - yneB. Pent - 2 - en - 4 - yneC. Pent - 1 - yn - 3 - eneD. Pent - 4 - yn - 2 – ene |
| Answer» Correct Answer - A | |
| 14. |
Hot concentrated sulpuric acis is a moderatly strong oxidizing agent. Which of the following reaction does not shwo oxidizing behaviour?A. `Cu+2H_(2)SO_(4)toCuSO_(4)+SO_(2)+2H_(2)O`B. `3S+2H_(2)SO_(4) to 3SO_(2)+2H_(2)O`C. `C+2H_(2)SO_(4)toCO_(2)+2SO_(2)+2H_(2)O`D. `CaF_(2)+H_(2)SO_(4)toCaSO_(4)+2HF` |
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Answer» Correct Answer - D Concentrated `H_(2)SO_(4)` act strong oxidizing agent so oxidizes non metal `underset(0)(C)+underset(+6)(2H_(2)SO_(4))tounderset(+4)(CO_(2))+underset(+4)(2SO_(2))+2H_(2)O` `underset(0)(3S)+underset(+6)(2H_(2)SO_(4))tounderset(+4)(2SO_(2))+2H_(2)O` `underset(0)(C)u+underset(+6)(H_(2)SO_(4)) overset(+2)(Cu)SO_(4)+underset(+4)(SO_(4))+H_(2)O` `Caoverset(-1)(F_(2))+overset(+6)(H_(2)SO_(4))to overset(+6)(CaSO_(4))+overset(-1)(2HF)` |
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| 15. |
One of the free-living, anaerobic nitrogen-fixer is Or which of the following is a photoautotrophic bacteriumA. BeijernickiaB. RhodospirillumC. RhizobiumD. Azotobacter |
| Answer» Correct Answer - B | |
| 16. |
The permissible use of the technique amniocentesis is for :A. detecting sex of the unborn foetusB. artificial inseminationC. transfer of embryo into the uterus of a surrogate motherD. Detecting any genetic abnormality |
| Answer» Correct Answer - D | |
| 17. |
Which one of the following statements is incorrect ?A. The residual air in lungs slightly decreases the efficiency of respiration in mammals (B. The presence of non-respiratory air sacs, increases the efficiency of respiration in birdsC. In insects, circulating body fluids serve to distribute oxygen to tissuesD. The principle of countercurrent flow facilitates efficient respiration in gills of fishes |
| Answer» Correct Answer - B | |
| 18. |
A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them : - A. "A" is the earlier pyramid and no change has occurred in the growth rateB. A is more recent shows slight reduction in the growth rateC. B is earlier pyramid and shows stabilized growth rateD. B is more recent showing that population is very young |
| Answer» Correct Answer - 2 | |
| 19. |
For a body, angular velocity `vecomega= hati-2hatj+3hatk` and radius vector `vecr=hati+hatj+hatk`, then its velocity `(vecv= vecomega xx vecr)` is :A. `-5hati+2hatj+3 hatk`B. `-5hati+2hatj-3 hatk`C. `-5hati-2hatj+3 hatk`D. `-5hati-2hatj-3 hatk` |
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Answer» Correct Answer - A `vecv=vecwxxvecr` `|{:(hati , hatj , hatr), (1 , -2 , 3), (1 , 1, 1):}|` `=hati(-2-3)-hatj(1-3)+hatk(1+2)` `=-5hati+2hatj+3hatk` |
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| 20. |
The dinesity of meterial in CGS system of mass is `4g cm^(3)` in a system of unit in which unit of length is `10 cm` and unit of mass is `100g` the value of density of meterial will beA. 0.04B. 0.4C. 40D. 400 |
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Answer» Correct Answer - C `M=d.V implies d = (M)/(L^(3))` `implies d = (4gm)/(cm^(3))=4((1//100))/(10^(-3))=40(gm)/(cm^(3))` |
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| 21. |
Biological importance of Ozone layer isA. It stops ultraviolet raysB. Ozone layer reduces green house effectC. Ozone layer reflects radio wavesD. Ozone layer controls `O_2//H_2` ratio in atmosphere |
| Answer» Correct Answer - A | |
| 22. |
A black body has maximum wavelength `lambda_(m)` at temperature `2000 K`. Its corresponding wavelength at temperature 3000 will beA. `3/2lambda_m`B. `2/3lambda_m`C. `16/81lambda_m`D. `81/16lambda_m` |
| Answer» Correct Answer - B | |
| 23. |
The efficiency of carnot engine is 50% and temperature of sink is 500K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of the sink will be : -A. 100 KB. 600 KC. 400 KD. 500 K |
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Answer» Correct Answer - C % n =`(1-T_2/T_1)xx100` For 50% `50/100 =1-500/T_1 rArr T_1=1000 K` For 60% `60/100`=1-`T_2/1000 rArr T_2`=400 K |
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| 24. |
The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:A. AscomycetesB. DeuteromycetesC. BasidiomycetesD. Phycomycetes |
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Answer» Correct Answer - B Deuteromycetes lack sexual reproduction and so are termed fungi imperfectii. |
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| 25. |
Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?A. Pheretima – Sexual dimorphismB. Musca – Complete metamorphosisC. Chameleon – MimicryD. Taenia – Polymorphism |
| Answer» Correct Answer - B | |
| 26. |
For photoelectric emission from certain metal the cut - off frequency is `v`. If radiation of frequency `2 v` incident on the metal plate , the maximum possible velocity of the emitted electron will be (`m` is the electron mass).A. `sqrt(hv//(2m))`B. `sqrt(hv//m)`C. `sqrt(2hv//m)`D. `2sqrt(hv//m)` |
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Answer» Correct Answer - C Cutoff frequency = v Work function `=phi =hv` Use, `E=K.E. +phi` `2hv=(1)/(2)mv^(2)+hv` `(1)/(2)mv^(2)=2hv-hv=hv` `v=sqrt((2hv)/(m))` |
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| 27. |
A women with 47 chromosomes due to three copies of chromosomes 21 is charactericzed by :A. Turner syndromeB. Down syndromeC. SuperfemalenessD. Triploidy |
| Answer» Correct Answer - B | |
| 28. |
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected which of the following mode of inheritance do you suggest for this diseaseA. Sex-limited recessiveB. Autosomal dominantC. Sex-linked recessiveD. Sex-linked dominant |
| Answer» Correct Answer - C | |
| 29. |
Which of the following concerns photophosphorylationA. ADP + AMP `overset"Lightenergy"to` ATPB. ADP + Inorganic `PO_4 overset"Lightenergy"to` ATPC. ADP + Inorganic `PO_4 to` ATPD. AMP + Inorganic `PO_4 overset"Lightenergy"to` ATP |
| Answer» Correct Answer - B | |
| 30. |
In Drosophila, during organ differentiation, one organ can be replaced by another like wings by legs. Genes responsible for it are :A. Double dominat geneB. Homeotic geneC. Complimentary geneD. Plastid |
| Answer» Correct Answer - B | |
| 31. |
Conversion of milk to curd improves its nutritional value of increasing the amount ofA. Vitamin `B^(12)`B. Vitamin AC. Vitamin DD. Vitamin E |
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Answer» Correct Answer - A `*` Curd is more nourishing than milk. `*` It has enriched presence of vitamins specially Vit-`B^(12)`. |
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| 32. |
Sewage purification is performed byA. MicrobesB. FertilisersC. AntibioticsD. Antiseptics |
| Answer» Correct Answer - A | |
| 33. |
Transfusion tissue, a modified vascular tissue is found in leaves ofA. PinusB. DryopterisC. CycasD. Both (1) and (3) |
| Answer» Correct Answer - D | |
| 34. |
Which of the statements about 'Denaturation' given below are correct ? (1) Denaturation of proteins causes loss of secondary and tertiary structures of the protein. (2) Denaturation leads to the conversion of double strand of DNA into single strand. (3) Denaturation affects primary structure which gets distorted.A. (a), (b) and (c)B. (b) and (c)C. (a) and (c)D. (a) and (b) |
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Answer» Correct Answer - D Primary structure is unaffected by denaturation. |
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| 35. |
Semiconservative replication of DNA was first demonstrated inA. Salmonella typhimuriumB. Drosophila melanogasterC. Escherichia coliD. Streptococcus pneumoniae |
| Answer» Correct Answer - 3 | |
| 36. |
Biodiversity of a geographical region representsA. Species endemic to the regionB. Endangered species found in the regionC. The diversity in the organisms living in the regionD. Genetic diversity present in the dominant species of the region. |
| Answer» Correct Answer - C | |
| 37. |
Dental formula of adolescent human being before 17 years `:-`A. `2122/2122`B. `2123/2123`C. `2102/2102`D. `2023/1023` |
| Answer» Correct Answer - A | |
| 38. |
Which of the following statement is true for LymphA. WBC and serumB. All components of blood except RBCs and some proteinsC. RBCs, WBCs and PlasmaD. RBCs, Proteins and Platelets |
| Answer» Correct Answer - B | |
| 39. |
Choose the correct sequence of stages of growth curve for bacteriaA. Leg, Log, stationary, Decline phaseB. Leg, Log, Stationary phaseC. Stationary, Leg, Log, Decline phaseD. Decline, Leg, Log phase |
| Answer» Correct Answer - A | |
| 40. |
One-gene-one enzyme hypothesis was proposed by :-A. R. FranklinB. Hershey and ChaseC. A.GarrodD. Beadle and Tatum |
| Answer» Correct Answer - D | |
| 41. |
Out of 64 codons , 61 codons code for 20 types of amino acid. It is calledA. Degeneracy of genetic codeB. Overlapping of geneC. Wobbling of codonD. Universility of codons |
| Answer» Correct Answer - A | |
| 42. |
Extrusion of second polar body from egg occurs:A. simultaneously with first cleavageB. after entry of sperm but before fertilizationC. after fertilizationD. before entry of sperm into ovum |
| Answer» Correct Answer - B | |
| 43. |
Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct:-A. Aspergillus niger – citric acidB. Yeast – statinsC. Acetobacter aceti – acetic acidD. Clostridium butylicum – lactic acids |
| Answer» Correct Answer - D | |
| 44. |
Which of the following statements regarding cilia is not correctA. The organized beating of cilia is controlled by fluxes of `Ca^(2+)` across the membraneB. Cilia are hair-like cellular appendagesC. Microtubules of cilia are composed of tubulinD. Cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules |
| Answer» Correct Answer - A | |
| 45. |
Which of the following pairs of an animal and a plant represent endangered organism in IndiaA. Bentinckia nicobarica and Red PandaB. Tamarind and Rhesus monkeyC. Cinchona and LeopardD. Banyan and Black buck |
| Answer» Correct Answer - C | |
| 46. |
What is common about Trypanosoma, Noctiluca Monocystis and GiardiaA. These are all unicellular protistsB. They have flagellaC. They produce sporesD. These are all parasites |
| Answer» Correct Answer - A | |
| 47. |
Read the following four statements (A-D) A. The first transgenic buffalo, Roise produced milk which was human alpha-lactalbumin enriched B. Restriction enzymes are used in isolation of DNA from other macromolecules C. Downstream processing is one of the step of rDNA technology D. Disarmed pathogen vectors are also used in transfer of rDNA into the host which of the two statements have mistakes ?A. Statements (A) and (B)B. Statements (B) and (C)C. Statements (C) and (D)D. Statements (A) and (C) |
| Answer» Correct Answer - A | |
| 48. |
Jurassic period of the Mesozoic era is characterised byA. Gymnosperms are dominant plants and first birds appearB. Radiation of reptiles and origin of mammal like reptilesC. Dinosaurs become extinct and angiosperms appearD. Flowering plants and first dinosaurs appear |
| Answer» Correct Answer - A | |
| 49. |
Read the following four statements (A-D) (a) Colostrum is recommended for the new born because it is rich in antigens (b) Chikengunya is caused by a Gram negative bacterium (c) Tissue culture has proved useful in obtaining virus-free plants (d) Beer is manufactured by distillation of fermented grape juice How many of the above Statements are wrongA. ThreeB. FourC. OneD. Two |
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Answer» Correct Answer - A Tissue culture Par 9.5 |
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| 50. |
In which one of the following options the two examples are correctly matched with their particular type of immunity? A. `{:(" ""Examples","Type of immunity"),("Saliva in mouth and tears in eyes","Physical barriers"):}`B. `{:(" ""Examples","Type of immunity"),("Mucus coating of epithelium lining the urinogenitial tract and the HCl in stomach","Physiological barriers"):}`C. `{:(" ""Examples","Type of immunity"),("Polymorphonuclear leukocytes and monocytes","Cellular barriers"):}`D. `{:(" ""Examples","Type of immunity"),("Anti-tetanus and anti-snake bite injections","Active immunity"):}` |
| Answer» Correct Answer - C | |