

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.
701. |
Study the following table carefully and select the correct option for 1,2,3 and 4. A. `{:(,1,2,3,4),((a),"Prokaryotic","Absent","Absent","Unicellular"):}`B. `{:(,1,2,3,4),((b),"Prokaryotic","Present","Present","Multicellular"):}`C. `{:(,1,2,3,4),((c),"Eukaryotic","Present","Present","Multicellular"):}`D. `{:(,1,2,3,4),((d),"Eukaryotic","Absent","Absent","Unicellular"):}` |
Answer» Correct Answer - B | |
702. |
Bacteria are grouped under four categories according to their shape. Study the given figures and select the correct option regarding this. A. `{:(,A,B,C,D),((a),"Cocci","Bacilli","Spirilla","Vibrio"):}`B. `{:(,A,B,C,D),((b),"Sprilla","Bacilli","Vibrio","Cocci"):}`C. `{:(,A,B,C,D),((c),"Bacilli","Spirilla","Vibrio","Cocci"):}`D. `{:(,A,B,C,D),((d),"Bacilli","Spirilla","Cocci","Vibrio"):}` |
Answer» Correct Answer - C Bacteria are grouped under four categories based on their shapes: the spherical coccus (pl.: cocci), the rod-shaped bacillus (pl.: bacilli), the comma-shaped vibrium (pl.: vibrio) and the spiral shaped (pl.: spirilla). |
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703. |
Why are some fungi grouped under "fungi imperfecti"? |
Answer» Because they lack perfect (sexual) stages. | |
704. |
Asseration : Chemosynthetic autotrophic bacteria oxidise various inorganic substances. Reason : Energy released during oxidation is used in ATP production.A. If both assertion and reason and true and reason is the correct explanation of assertion.B. If both assertion and reason and true and reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
Answer» Correct Answer - B Chemoautotrophic bacteria are able to manufacture their organic food from inorganic raw materials with the help of energy derived from exergonic chemical reactions involving oxidation of an inorganic substance pressent in the external medium. The chemical energy obtained from oxidation reaction is trapped in ATP molecules. |
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705. |
In viruses which one acts as genetic material ?A. DNAB. RNAC. Both A and BD. Either A or B |
Answer» Correct Answer - D In viruses and viroids are called acellular organisms. |
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706. |
Given figure represents the ultrastructure of a typical cyanobacterial cell. Identify the different parts and select the correct option for A and B A. `{:(,A,B),((a),"Naked DNA","Thylakoid"):}`B. `{:(,A,B),((b),"Thylakoid","Naked DNA"):}`C. `{:(,A,B),((c),"DNA+Histones","Thylakoid"):}`D. `{:(,A,B),((d),"DNA+Histone","80S ribosomes"):}` |
Answer» Correct Answer - A | |
707. |
Which is correctly assigned ?A. Parmoecium and Plasmodium belong to same kingdom as that of Penicillium.B. Lichen is a composite organism formed from symbiotic association of an alga and a protozoan.C. Yeast used in making bread and beer is a fungus.D. Nostoc and Anabaena are examples of protista. |
Answer» Correct Answer - C `**` Paramoecium and Plasmodium belong to different kingdom to that of Penicillium. `**` Lichen is composite organism formed from symbiotic association of an alga and a fungi. `**` Yeast used in making bread and beer is a fungus. `**` Nostoc and Anabacena are examples of monera. |
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708. |
Which types of bacteria play a great role in recycling nutrients ?A. ArchaebacteriaB. Photosynthetic autotrophic bacteriaC. Chemosynthetic autotrophic bacteriaD. Heterotrophic bacteria |
Answer» Correct Answer - C Chemosynthetic autotrophic bacteria play a great role in recycling nutrients. |
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709. |
Are chemosynthetic bacteria autotrophic or heterotrophic ? |
Answer» Chemosynthetic bacteria are capable of oxidising various inorganic substances such as nitrates, nitrites and ammonia and use the energy released for their ATP production. So, they are autotrophs and not heterotrophs. | |
710. |
Which of the following organisms are known as chief producers in the oceans ?A. DinoflagellatesB. DiatomsC. CyanobacteriaD. Euglenoids |
Answer» Correct Answer - B | |
711. |
In which of the following kingdoms, both plant and animal like unicellular organisms are placed ?A. MoneraB. ProtistaC. FungiD. Plantae |
Answer» Correct Answer - B In Protista kingdom both plant and animal like unicellular organism are placed. |
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712. |
The size of the following species increases in the orderA. `A1 lt Mg^(2+) lt F^(-) lt Na^(+)`B. `F^(-) lt A1 lt Na^(+) lt Mg^(2+)`C. `Mg^(2+) lt Na^(+) lt F^(-) A1`D. `Na^(+) lt A1 lt F^(-) lt Mg^(2+)` |
Answer» Correct Answer - C `F^(-), Na^(+)`, and `Mg^(2+)` are isoelectronic species, their size increases with decrease of nuclear charge. Thus, the correct order of size is `Mg^(2+)(Z = 12) lt Na^(+) (Z = 10) lt F^(-) (Z = 9)` |
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713. |
Which of the following has the largest atomic radius?A. `Mg`B. `Ca`C. `Sr`D. `Ba` |
Answer» Correct Answer - D On descending a group in the periodic table, the sizes of the atoms increase due to the effect of extra shells of electrons outweights the effect of increased nuclear charge on account of increasing shielding effect of inner eletrons. The order is `Mg lt Ca lt Sr lt Ba`. |
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714. |
Which of the following has the largest atomic radius?A. `C`B. `P`C. `Si`D. `N` |
Answer» Correct Answer - C Note that `C` and `Si` are in the same group (group `14`) so that the radius of `C` is smaller than that of `Si` (atomic radius increases as we go down a group). Both `N` and `P` are in the same group, thus, the radius of is smaller than that of `P`. Both `C` and `N` are in the second period, and `C` is to the left of `N`. Therefore, the radius of `N` is smaller than that of `C` (atomic radius decreases as we move from left to right across a period). Similarly, both `Si` and `P` are in the third period and `Si` is to left of `P`, therefore, teh radius of `P` is smaller than that of `Si`. Thus, the order of increasing radius is `N lt C lt P lt Si`. |
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715. |
Which of the following species will have the largest size?A. `A1^(3+)`B. `A1`C. `Mg^(2+)`D. `Mg` |
Answer» Correct Answer - D Atomic radii decrease across a period `(Mg rarr A1)`. Cations are always smaller than their parent atoms. Among isoelectronic species, the one with the larger positive nuclear charge will have a smaller radius: `Mg gt A1 gt Mg^(2+) gt A1^(3+)` |
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716. |
which of the following has largest radius ?A. `Na^(+)`B. `F^(-)`C. `O^(2-)`D. `Mg^(2+)` |
Answer» Correct Answer - C The cation with greater positive charge will have smaller radius while the abion with greater negative charge will have larger radius: `O^(2-)gt F^(-) gt Na^(+) gt Mg^(2+)` |
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717. |
What is trinominal nomenclature ? Give an example. |
Answer» The trinominal nomenclature is the extension of the binominal system of nomanclature. It is permits the designation of subspecies with a three worded name called 'trinomen'. Ex : Homo Sapiens Sapiens, Corvus splendns spelendns. |
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718. |
Which of the following statements is/are correct ?A. Oxalic acid is a dicarboxylic acidB. Functional group present in picric acid is `-COOH`.C. The IUPAC name of lactic acid is 2-hydroxy propanoic acid.D. IUPAC name of acetyl acetone is pentane-2,4-dione. |
Answer» Correct Answer - A::C::D |
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719. |
Which is the correct order of electron affinity ?A. `Li gt Mg gt Na`B. `Na lt Li lt Mg`C. `Li lt Na gt Mg`D. `Li gt Na gt Mg` |
Answer» Correct Answer - D `Li gt Na gt Mg = Be` |
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720. |
In which of the following species energy is released when electron is added?A. `F^(-)`B. `O`C. `O^(-)`D. `Na` |
Answer» Correct Answer - B Energy is released when electrons is added to `O` but energy is absorbed in rest of the cases when electrons is added. |
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721. |
Which one has maximum electron affinity?A. `N`B. `Be`C. `B`D. `Cl` |
Answer» Correct Answer - D Halogens have maximum electrons affinity due to their smaller size. |
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722. |
Give two important contributions of Dr. M.s Swaminathan. |
Answer» He and his team developed short duration, high yielding varieties of rice including scented Basmati. He introduced Mexican varieties of wheat in India. |
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723. |
Write any two chemical differences between DNA and RNA . |
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724. |
Give different types of cry genes and pests which are controlled by the proteins encoded by these genes ? |
Answer» The proteins encoded by the genes cry IAC and cry II Ab control the cotton bollworms, cry IAb controls corn borer. [Cry protein is a protein toxin produced by Bacillus thuringiensis that kills insects]. |
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725. |
What do you understand by vernalization ? Write its significance. |
Answer» The method of inducing flowering quantitatively or qualitatively on exposure to low temperature is called vernalizaton. It prevents precocious reproductive development late in the growing season, and enables the plant to have sufficient time to reach maturity. It specially refers to the promotion of flowering. It also timulates a subsequent photo periodic flowering response in biennials. [cabbage, carrot]. |
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726. |
For which variety of Indian rice, has a patent been filed by a USA company ? |
Answer» Basmati Rice. |
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727. |
The `IUPAC` name of the following structure is `[CH_(3)CH(CH_(3))]_(2)C(CH_(2)CH_(3))C(CH_(3))C(CH_(2)CH_(3))_(2)`A. 3-,5-diethyl-4,6-dimethyl-5-1-methylethylhept-3-eneB. 3,5-diethyl-5-isopropyl-4,6-dimethylhept-2-eneC. 3,5-diethyl-5-propyl-4,6-dimethylhept-3-eneD. None of the above |
Answer» Correct Answer - A |
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728. |
The IUPAC name of the following structure `(CH_(3))C.C.C.(CH_(3))CH(CH_(3))` is:A. 3-methylhex-4-yn-2-eneB. 3-methylhex-2-en-4-yneC. 4-methylhex-4-ene-4-yneD. All are correct |
Answer» Correct Answer - B |
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729. |
Number of `2^(@)` alcoholic group present in structure A. 3B. 2C. 4D. 5 |
Answer» Correct Answer - C |
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730. |
IUPAC name of the compound is:A. 3-ethyl-5-methyl phenolB. 5-methyl-3-ethyl phenolC. 5-methyl-3-ethyl cyclohexanolD. 3-ethyl-5-methyl cyclohexanol |
Answer» Correct Answer - D |
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731. |
The compound which has one isopropyl group is :A. 2,2,3,3-tetramethylpentaneB. 2,2-dimethylpentaneC. 2,2-3-trimethylpentaneD. 2-methylpentane |
Answer» Correct Answer - D |
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732. |
Find out the number of `1^(@),2^(@)` and `3^(@)` carbon atoms in the above compound.A. I is having four `2^(@)` and four `3^(@)` carbonsB. II is having three `1^(@)`, six `2^(@)` three `3^(@)` and two `4^(@)` carbonsC. III is having four `1^(@)` two `2^(@)`, eight `3^(@)` carbons and one `4^(@)` carbonD. IV is having three `1^(@)`, three `2^(@)` and three `3^(@)` carbons |
Answer» Correct Answer - A::B::C::D |
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733. |
Which of the folllowing are homolgous ?A. B. `CH_(3)-NH_(2)` and `CH_(3)-NH-CH_(3)`C. `CH_(3)-CH_(2)-CH_(2)-CH_(2)-NH_(2)` and `CH_(3)-CH_(2)-NH_(2)`D. `H-overset(O)overset(|)(C)-O-CH_(3)` and `CH_(3)-overset(O)overset(||)(C)-OCH_(3)` |
Answer» Correct Answer - C::D |
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734. |
How many compounds are organic compounds among the compounds given below ? |
Answer» Correct Answer - 9 |
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735. |
Which of the following is/are organic compound(s)?A. `CH_(3)MgBr`B. `PhNa`C. `C CI_(4)`D. Urea |
Answer» Correct Answer - A::B::C::D |
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736. |
Which of correct about ionisation potential?A. It is independent of atomic radiiB. It increases with increase in atomic radiiC. it remains constant with increase in atomic radiiD. It decrease with increase in atomic radii |
Answer» Correct Answer - D We know that ionisation potential gradually decreases of moving down the group while atomic size increase as we move down the group. Hence, the larger the atomic size, the smaller is ionisation potential. |
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737. |
Assertion:Among isoelectronic species,the cation with the greater positive charge will have a smaller radius.Reason:Greater the attraction of the electrons to the nucleus,samller is the size of atom/ion.A. If both assertion and reason is the correct explanation of assertion.B. If both assertion and reason is the correct explanation of assertion.C. If both assertion and reason is the correct explanation of assertion.D. If both assertion and reason is the correct explanation of assertion. |
Answer» Correct Answer - A | |
738. |
In which of the following arrangements, the order is according to the property indicated against it?A. `Li lt Na lt K lt Rb` (metallic radius)B. `B lt C lt N lt O` (ionization enthalpy)C. `I lt Br lt F lt C1`(electron gain enthalpy)D. `A1^(3+) lt Mg^(2+) lt Na^(+) lt F^(-)` (ionic radius) |
Answer» Correct Answer - B Nitrogen has higher ionization enthalphy relative to oxygen because of the extra stability of excatly half-full `p`-subshell. |
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739. |
Assertion:Atomic number of the element ununtrium is 113. Reason:According to IUPAC system of nomenclature,the numerical roots for 1,1 and 3 are un,un and tri respectvely.A. If both assertion and reason is the correct explanation of assertion.B. If both assertion and reason is the correct explanation of assertion.C. If both assertion and reason is the correct explanation of assertion.D. If both assertion and reason is the correct explanation of assertion. |
Answer» Correct Answer - A | |
740. |
The ionisation energy of nitrogen is more than that of oxygen becauseA. Of the extra stability size of nitrogen is more than that of oxygen becauseB. Of the smaller size of nitrogenC. The former contains less number of electronsD. The former about ionisation potential |
Answer» Correct Answer - A Due to extra stability of half-filled p-subshell. `IP` of `N gt IP` of `O`. |
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741. |
Which has the highest melting point?A. `LiCl`B. `BeCl_(2)`C. `BCl_(3)`D. `C Cl_(4)` |
Answer» Correct Answer - B In `BeCl_(2)` has the higest melting point due to ionic bond. |
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742. |
the correct order of electron affinty isA. `OgtCgtNgtB`B. `BgtNgtCgtO`C. `OgtCgtBgtN`D. `OgtBgtCgtN` |
Answer» Correct Answer - C `underset(140.9)(O)gtunderset(122.3)(C) gt underset(83)(B) gtN` value of electron affinity increase on going from left to right in periods but the value of electrons affinity of `V^(th)` `A` elements is less than that of `IV^(th) A` element, this is due to half-filled p-orbitals presence. |
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743. |
Production of zoospore is characteristic of members ofA. AscomycetesB. PhycomycetesC. BasidiomycetesD. Deuteromycetes |
Answer» Correct Answer - B Production of zoospores is the characteristic of the members of phycomycetes. |
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744. |
Arrange `S,O and Se` in acending order of electron affinity?A. `Se lt S lt O`B. `O lt Se lt S`C. `S lt O lt Se`D. `S lt Se lt O` |
Answer» Correct Answer - B On moving down in the group `EA` decreases but due to smaller size of oxygen incoming electoron experience more repulsion so `EA` of `O` is less then S. `S gt O gtSe`. |
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745. |
Which of the following element has the highest ionisation enregy ?A. nitrogenB. oxygenC. carbonD. boron |
Answer» Correct Answer - A All these element belong to the `2nd` priod. In general, the ionization potential increases on moving across the period on account of increase of nuclear charge. However, oxygen has unexpectedly lower ionization potential because after the loss of an electron, it ecquires a stable electron, it ecquires a stable electron configuration in the form of excactly half-full `p` subshell: `O(1s^(2)2s^(2)2p^(4))overset(-e^(-))rarrO (1s^(2)2s^(2)2p^(3))` |
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746. |
Which of the following statements is not correct?A. A metal crystal lattice consists of positive kernels (metal ions left after the removal of valence electrons) arranged in a definite pattern in a sea of mobile electrons.B. Each kernel (metal ion) is simultaneously attracted by a number of mobile electrons and each mobile electron is attracted by a number of metal ions.C. van der Waals radius of an element is always shorter than its covalent radius.D. A metallic radius is always longer than its convalent radius. |
Answer» Correct Answer - C Since van der Waals forces are weakes than the convalent bonds, and during the formation of convalent bonds the electron clouds overlap, covalent radii are always smaller than the van der Waals radii. The mutual force of attraction between the mobile electrons and the positive kernels is called the metallic bond. it is weakes than the covalent bond. covalent radius of a metal is usually determined from its vapors which probably exist as usually moleculeus. |
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747. |
Classification for flowering plants was given byA. R.H. WhittakerB. Aristotle and G.J. MendelC. George Bentham and J.D. HookerD. Aristotle and George Bentham |
Answer» Correct Answer - C Classification for flowering plants was given by George Bentham and J.D. Hooker. |
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748. |
Which of the following bacteria is observed as chain-like formation ?A. Escherichia coliB. Bacillus subtilisC. Streptococcus pyogenesD. Microcossus flavus |
Answer» Correct Answer - C Streptococcus pyogenes bacteria is observed as chain -like formation. |
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749. |
The correct order of the size isA. `Ca^(2+)gtK^(+)gtArgtClgtS^(2-)`B. `K^(+)gtCa^(2+)gtCl^(-)gtArgtS^(2-)`C. `S^(2-)gtCl^(-)gtArgtK^(+)gtCa^(2+)`D. `S^(2-)gtArgtCl^(-)gtCa^(2+)gtK^(+)` |
Answer» Correct Answer - A All the species are isoeletronic therefore the greater the nuclear charge the lesser will be the size. |
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750. |
Prokaryotes cells are characterised byA. The presence of distinct nuclear membraneB. Absence of chromatic materialC. The presence of distinct chromosomeD. Absence of nuclear membrane |
Answer» Correct Answer - D | |