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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.
| 201. |
Presence of which is not true for EuglenaA. ChloroplastsB. FlagellaC. Cellulosic cell wallD. Proteinaceous pellicle |
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Answer» Correct Answer - C Cellulosic cell wall is not found in Euglena. |
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| 202. |
Read the following statements and select the correct option Statement 1: Euglena can be considered as a plant due to the presence of chlorophyll. Statement 2: Euglena cannot be classified on the basis of two kingdom system of classification.A. Both statements 1 and 2 are correct.B. Statement 1 is correct but statement 2 is incorrect.C. Statement 1 is incorrect but statement 2 is correct.D. Both statements 1 and 2 are incorrect. |
| Answer» Correct Answer - A | |
| 203. |
Describe briefly the four major groups of Protozoa. |
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Answer» Protozoa are microscopic unicellular protists with heterotrophic mode of nutrition. They may be holozoic, saprobic, or parasitic. These are divided into four major groups. (1) Amoeboid protozoa or sarcodines They are unicellular, jelly-like protozoa found in fresh or sea water and in moist soil. Their body lacks a periplast. Therefore, they may be naked or covered by a calcareous shell. They usually lack flagella and have temporary protoplasmic outgrowths called pseudopodia. These pseudopodia or false feet help in movement and capturing prey. They include free living forms such as Amoeba or parasitic forms such as Entamoeba. (2) Flagellated protozoa or zooflagellates They are free living, non-photosynthetic flagellates without a cell wall. They possess flagella for locomotion and capturing prey. They include parasitic forms such as Trypanosoma, which causes sleeping sickness in human beings. (3) Ciliated protozoa or ciliates They are aquatic individuals that form a large group of protozoa. Their characteristic features are the presence of numerous cilia on the entire body surface and the presence of two types of nuclei. All the cilia beat in the same direction to move the water laden food inside a cavity called gullet. They include organisms such as Paramoecium, Vorticella,etc. (4) Sporozoans They include disease causing endoparasites and other pathogens. They are uninucleate and their body is covered by a pellicle. They do not possess cilia or flagella. They include the malaria causing parasite Plasmodium. |
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| 204. |
The class of protozoa which includes all parasitic animals isA. AmoboidsB. CiliatesC. FlagellatesD. Sporozoans |
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Answer» Correct Answer - D The class of protozoa which includes all parasitic animals is Sporozoan. |
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| 205. |
Macronucleus and micronucleus are the characteristic feature ofA. Paramoecium and VorticellaB. Opalina and NyctotherusC. Hydra and BalantidumD. Vorticella and Nyctotherus |
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Answer» Correct Answer - A Macronucleus and micronucleus are the characteristic feature of Paramoecium and Vorticella. |
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| 206. |
Who prepare food in lichens ?A. MycobiontB. FungiC. PhycobiontD. All of the above |
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Answer» Correct Answer - C Phycobiont prepare food in lichens. |
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| 207. |
What is the responsibility of mycobiont in lichens ?A. Provide shelter to phycobiontB. Absorb mineral nutrientsC. Absorb waterD. All of the above |
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Answer» Correct Answer - D Mycobiont in lichens provide shelter to algae, absorb mineral nutrients and absorb water. |
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| 208. |
Which of the following fungi is a parasite on mustard plant and causes the disease white rust of crucifers?A. Albugo candidaB. PucciniaC. graminis triticiD. Saccharomyces cerevisiae |
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Answer» Correct Answer - A White rust occurs in crucifers and is characterised by the appearance of irregular white blisters containing conidiosporangia on the leaves and steams. White rust is caused conidiosporangia on the leaves and stems. White rust is caused by Albugo condida (Cystopus candidus). |
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| 209. |
Assertion : Virus is an obligate parasite. Reason : Virus is host specific.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. |
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Answer» Correct Answer - B Virus is an obligate parasite. It is inert outside the host cell. A virus does not grow, divide or reproduce like typical organisms. Instead it multiplies by independent formation of its parts using host machinery and then assembly of part to produce virus particles. Viruses are host specific. |
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| 210. |
A virus is considered as a living organism and an obligate parasite when inside a host cell. But virus is not classified along with bacteria or fungi. What are the characters of virus that are similar to non-living objects ? |
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Answer» Viruses are considered as living when they are inside a host but outside any host they are referred to as non-living due to their (a) inert nature (b) inability to reproduce (c) lack of cellular organisation (d) inability for growth and cell division These characters portraited by viruses make them identical to non-living organisms. Viruses are considered a connecting like between living and non-living organisms. |
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| 211. |
Assertion:In the present form of periodic table,the period number corresponds to the highest principal quantum number of the elements in the period.Reason:Elements having similar outer electronic configuration in their atoms belongs to same period.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. |
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Answer» Correct Answer - C Elements having similar outer electronic configurations in their atoms are arranged in vertical column,called groups or famileis. |
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| 212. |
Assertion:The chemistry of the early actinoids is more comlicated than the corresponding lanthanoids.Reason:Outer electronic configuration of actinoids is `(n-2)f^(1-14)(n-1)d^(0-1)ns^(2)`.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. |
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Answer» Correct Answer - B The chemistry of the early actinoids is more complicated than the corresponding lanthanoids,due to the large number of oxidation states possible for these acrinoids and their radioactive nature. |
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| 213. |
Electronic configuratios of four elements `A, B, C` and `D` are given below: (i) `1s^(2)2s^(2)2p^(6)` (ii) `1s^(2)2s^(2)2p^(4)` (iii) `1s^(2)2s^(2)2p^(6)3s^(1)` (iv) `1s^(2)2s^(2)2p^(5)` Which of the following is the correct order of increasing tendency of gain electron:A. AltCltBltDB. AltBltCltDC. DltBltCltAD. DltAltBltC |
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Answer» Correct Answer - A A is Ne(10):`1s^(2)2s^(2)2p^(6)` B is O(8):`1s^(2)2s^(2)2p^(4)` C is NA(11):`1s^(2)2s^(2)2p^(6)3s^(1)`D is `F(9):1s^(2)2s^(2)2p^(5)`, Noble gases (A)have completely filled orbitals hence,they have no tendency to gain electrons. Element C prefers to lose electron `(3s^(1))` to attain stable noble gas configuration. Element D has Only 1 electron less than stable noble gas configuration.Thus,it has greater tendency to gain electron than element B which has 2 electrons less than noble gas configuration.Thus,the correct order of increasing tendency to gain electron is:AltCltBltD |
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| 214. |
Fairy rings in lawns result from outward, spreading circles of mycelia of mushrooms producing, at their periphery, fruiting bodies calledA. ascocarpsB. basidiocarpsC. sorocarpsD. pseudocarps |
| Answer» Correct Answer - B | |
| 215. |
Compare the different types of fruiting bodies in fungi. |
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Answer» The fruiting bodies are not formed in Mastigomycotina ans Zygomycotina. The fruiting bodies of Ascomycetes are ascocarps and those of Basidiomycetes are basidicocarps. The ascocarps of the three types : (1) Apothecium (pl. apothecia) : These are cup-shaped or disc-shaped fruiting bodies. The asci are arranged in upper layer, called hymenium. Example, Morchella. (2) Perithecium (pl. perithecia) : It is flask-shaped fruiting body which has a definite apical pore, called ostiole. Example, Claviceps. (3) Clesitothecium (pl. Cleistothecia) : It is a small spherical or ovoid indehiscent fruiting body which is completely closed from all the sides. Example, Erysiphe. The basidiocarps of basidiomycetes differ in shape and size. The most common fruiting body of button mushroom has umbrella shaped pileus and stalk-like stipe. |
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| 216. |
Given is an electron microscopic structure of a `T_(2)` bacteriophage, identify the labelled parts P,Q,R,S and T and select the correct option. A. `{:(P,Q,R,S,T),("Head","Collar","Sheath","Basal plate","Tail fibre"):}`B. `{:(P,Q,R,S,T),("Head","Collar","Capsid","Tail","Tail fibre"):}`C. `{:(P,Q,R,S,T),("Capsid","Sheath","Basal plate","Capsomere","Tail fibre"):}`D. `{:(P,Q,R,S,T),("Head","Collar","Sheath","Capsomere","Tail fibre"):}` |
| Answer» Correct Answer - A | |
| 217. |
The sporozoa are all internal ____ that typically have an infective cyst statge in their life cycle. An example of sporozoa is the genus___ which causes malaria.A. ciliates, PlasmodiumB. flagellates, PlasmodiumC. parasites, PlasmodiumD. parasites, Trypanosoma |
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Answer» Correct Answer - C All sporozoans are endoparasites. Sexual reproduction takes place through syngamy. Asexual reproduction occurs through mutiple fission. Under unfavourable conditions, they form cysts. Eamples - Plasmodium (the malarial parasite), Monocystis, etc. |
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| 218. |
Which non-metal sublime on heating and have metallic lusture. |
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Answer» Correct Answer - `I` Iodine `(I)` |
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| 219. |
Who developed the long form of periodic table?A. Lother meyerB. Niel BohrC. MendeleevD. Moseley |
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Answer» Correct Answer - B Neil Bohr developed the long form of periodic table on the basis of Mosleys principle. |
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| 220. |
An element `M` has an atomic mass 19 and atomic number 9. Its ion is represented byA. `M^(+)`B. `M^(-)`C. `M^(2+)`D. `M^(2-)` |
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Answer» Correct Answer - B `M^(-)` After gaining and `e^(-)` the metal attains stable configuration. |
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| 221. |
Identify the correct order of acidic strength of `CO_(2),CuO, CaO` and `H_(2)O`.A. `CaO lt CuO lt H_(2)O lt CO_(2)`B. `CaO lt H_(2)O lt CuO lt CO_(2)`C. `H_(2)O lt CuO lt CaO lt CO_(2)`D. `H_(2)O lt CO_(2) lt CaO lt CuO` |
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Answer» Correct Answer - B Acidic strength: `CaO lt H_(2)O lt cuO lt CO_(2)` |
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| 222. |
Most plant virus have genetic material in the form ofA. DNAB. RNAC. RNAD. RNA+DNA |
| Answer» Correct Answer - B | |
| 223. |
The first ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given byA. `14.6,13.6`B. `13.6,14.6`C. `13.6,13.6`D. `14.6,14.6` |
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Answer» Correct Answer - A First IP of `O` is less than `N` due to half-filled stability in `N`. |
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| 224. |
Increasing order of acid strength of halogen acid isA. `HF lt HCl lt HBr lt HI`B. `HCl lt HBr lt HI lt HF`C. `HF lt HI lt HBr lt HCl`D. None of these |
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Answer» Correct Answer - A As going down the group size increases, a liberation of `H^(+)` ion becomes easy. So the other of acidity is: `HI gt HBr gt HCl gt HF` . |
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| 225. |
Which of the following is the most electropositivite element?A. aluminiumB. phosphorusC. MagnesiumD. sulphur |
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Answer» Correct Answer - C Electropositive character decreases across the period as metallic character decreases. |
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| 226. |
Metals are separated from nonmetals by a diagonal band of semimetals running from top left to bottom right of the____________in the table.A. `s`-blockB. `p`-blockC. `d-`blockD. `f`-block |
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Answer» Correct Answer - B Metalloids are found in `p`-block only. |
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| 227. |
Both metals and nonmetals behave similarly towardsA. waterB. dillute acidsC. oxidizing acidsD. oxygen |
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Answer» Correct Answer - C Metals are usually oxidized by oxidizing acids such an nitric acid. Similar reaction is shown by nonmetals: `Cu +4HNO_(3) rarr Cu(NO_(3))_(2) +2NO_(2)+2H_(2)O` `C+4HNO_(3)rarr H_(2)CO_(3) +4NO_(2) +H_(2)O` Some metals give off hydrogen with dilute acids while nonmetals never give off hydrogen. Metals form ionic oxides with oxygen while nonmetals usually form covalent oxides with oxygen. |
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| 228. |
Nonmetals lie on the_________of the periodic table.A. top right-hand sideB. top left-hand sideC. bottom right-hand sideD. bottom left-hand side |
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Answer» Correct Answer - A The metallic character increases from top to bottom while the nonmetallic character increases from left to right with respect to the position in the periodic table. |
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| 229. |
Which of the following is not the characteristic feature of nonmetals?A. Form molecular and covalent solidsB. Posses low corredination numberC. Form covalent acidic or neutral oxidesD. Form only convalent compounds |
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Answer» Correct Answer - D Give covalent compounds with nonmetald but from ionic or interstitial compounds with metals. From many types of structures: gaint and layer lattice, chains, molecular, and atomic. |
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| 230. |
Which of the following metals from amphoteric oxides?A. `Be, A1, Ga, Sn`,and `Pb`B. `A1,Ga,Sn`, and `Pb`C. `Sn` and `Pb`D. `A1`and `Ga` |
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Answer» Correct Answer - A Oxides of these metals react with acids as well as bases. For example, stannous oxide, `SnO`, is an amphoteric oxide as it dissolves in both acids and alkalies: `SnO+2HC1 rarr SnC1_(2) +H_(2)O` `SnO+2NaOH rarr Na_(2)SnO_(2) +H_(2)O` |
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| 231. |
Which one of the following is not a point in the Welfare Definition of Economics?a. Study of and ordinary manb. Economics does not focus on wealth alonec. Economics is the study of material welfared. Economics deals with unlimited wants and limited means |
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Answer» The correct option is (d) Economics deals with unlimited wants and limited means The welfare definition of economics is an effort by Alfred Marshall, a pioneer with khotacityneoclassical, to rethink his field of consideration. This definition grows the field of financial science to a bigger consider of humankind. |
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| 232. |
Find the equation of Tangent and parabola at point (2,3) for y^2 =20x. |
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Answer» Y=mx +a/m Or use differential method to get slope and then put it into point slope formY=mx +a/m will be answer konsi class ka question hai bro |
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| 233. |
Define mass percentage, volume percentage and mass to volume percentage solutions. |
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Answer» (i) Mass percentage : The mass percentage of a component of a solution is defined as the mass % = (Mass of the component in the solution)/(Total mass of the solution) x 100 (ii) Volume percentage (v/V) : It is defined as the volume % of a component = (Volume of the component)/(Total volume of solution) x 100 (iii) Mass to volume percentage w/V : It is defined as the mass of solute dissolved in 100 ml of the solution → It is commonly used in medicine and pharmacy. |
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| 234. |
What are lyophilic and lyophobic sols? |
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Answer» Lyophilic colloid : The colloidal solution in which the dispersed phase has great affinity to the dispersion medium is called a Lyophilic colloid or Lyophilic solution. Ex : Starch solution. The starch paste when dissolved in hot water, with stirring, the starch solution is formed. The starch particles (dispersed phase) has great affinity to water molecules (dispersion medium). So starch solution is a lyophilic solution or lyophilic colloid. Lyophobic colloid : The colloidal solution in which there exists not much affinity between the dispersed phase and dispersion medium, it is called a Lyophobic colloid or Lyophobic solution. Ex : Gold solution. Gold rods are placed in water containing alkali. Electric arc is applied between gold rods. The gold particles dissolves in water, to give gold solution. Gold particles (dispersed phase) have not much affinity towards water (dispersion medium). So this is a Lyophobic solution or Lyophobic colloid. |
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| 235. |
Select the wrong statement.A. Diatoms are chief producers in the oceansB. Diatoms are microscopic and float passively in waterC. The walls of diatoms are easily destructibleD. Diatomaceous earth is formed by the cell walls of diatoms |
| Answer» Correct Answer - C | |
| 236. |
Select the wrong statement.A. Cyanobacteria lack flagellated cellsB. Mycoplasma is a wall- less microorganismC. Bacterial cell wall is made up of peptidoglycanD. Pili and fimbriae are mainly involved in motility of bacterial cells. |
| Answer» Correct Answer - D | |
| 237. |
Select the mismatch.A. Cell maturity - Decrease in growth of primary cell wallB. Perxisomes - Endomembrane systemC. Smooth ER - Lipid synthesisD. Mycoplasma- Ability to survive anaerobically |
| Answer» Correct Answer - B | |
| 238. |
Select the mismatchA. Protists- EukaryotesB. Methanogens- ProkaryotesC. Gas vacuoles- Green bacteriaD. Large central vacuoles - Animal cells |
| Answer» Correct Answer - D | |
| 239. |
What is sex pilus ? What is its function ? |
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Answer» Sex pilus is a conjugation apparatus that pulls two cells together prior to DNA transfer. It help in binding two conjugants and also help in passing F plasmid F plasmid from F+ cell to F– cell. |
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| 240. |
What is meant by bolting ? Which hormone causes bolting ? |
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Answer» Sudden elongation of internodes prior to flowering is called bolting. It is caused by Gibberllins. |
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| 241. |
Does transpiration occur at night ? Give an example. |
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Answer» Yes. In succulent plants, stomata opens during the night and remain closed during the day time. [Scotoactive stomata] Eg : Bryophyllum, Cacti. |
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| 242. |
Without looking at the periodic table, select the elements belonging to same from the following list.A. `Z = 12, 38, 4, 88`B. `Z =9,16,3,35`C. `Z=5,11,27,19`D. `Z=24,47,42,55` |
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Answer» Correct Answer - A Group 2. `Be(Z = 4), Mg(Z =12), Ca(Z = 20), Sr(Z = 38), Ba(Z = 56), Ra(Z = 88)` |
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| 243. |
Which of the following statement is wrong?A. Among the following elements : `K, Mn, Ca, Cs, Fe, Cu, Pb, Os, Y` The number of transition element is `4`.B. All the lanthanides and actionides belong to `III B` or the `3rd` group in the periodic table.C. The inner transition elements belong to the `f`-block of the periodic table and are shown separately at the bottom of the periodic table.D. The `d`-block elements have variable valency. |
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Answer» Correct Answer - A (a) Statement (a) is wrong. The number of transition elements is five `(Mn, Fe, Cu, Os, Y)`. |
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| 244. |
Which of the following statements is wrong?A. The first ionisationpotential of `Al` is less than the first ionisation potential of `Mg`.B. The second ionisation potential of `Mg` is greater than the second ionisation potential of `Na`C. The first ionisation potential of `Na` is less than the first ionsation potential of `Mg`.D. The third ionisation potential of `Mg` is greater than the third ionisation potential of `Na` |
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Answer» Correct Answer - B `Na(Z=1) : 1s^(2) 2s^(2) 2p^(6) 3s^(1)` `Na^(o+): 1s^(2) 2s^(2) 2p^(6)` After losing the first electron, sodium acquires a very stable noble gas configuration. Therefore, its second ionisation potential is very high. So, it is incorrect to say that the second ionisation potential of Mg is greater than the second ionisation potential of Na. |
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| 245. |
The correct order of radii isA. `N lt Be lt B`B. `F^(ɵ)lt O^(2-) lt N^(3-)`C. `Na lt Li lt K`D. `Fe^(3+)lt Fe^(2+)lt Fe^(4+)` |
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Answer» Correct Answer - B `F^(ɵ) lt O^(2-) lt N^(3-)` All of these are isoelectronic ions (10 electrons). In isolectronic species, as the number of protons (atomic number) goes on increasing, size goes on decreasing due to stronger attraction on the electrons (Z for N, O and F=7, 8 and 9). |
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| 246. |
The correct order of acid strength isA. `Cl_(2)O_(7)gt SO_(3) gt P_(4)O_(10)`B. `CO_(2)gt N_(2)Ogt SO_(3)`C. `Na_(2)O gt MgO gt Al_(2)O_(3)`D. `K_(2)O gt CaO gt MgO` |
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Answer» Correct Answer - A The correct order of acidic strength is `Cl_(2)O_(7) gt SO_(2) gt P_(4)O_(10) (7 gp gt 6 gp gt 5 gp)` In the periodic table nature of oxides increases from left to right. Acidic nature of oxides decreases down the group. |
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| 247. |
Name any two artificially restructured plasmids. |
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Answer» PBR 322, PUC19,101. |
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| 248. |
Can a disease be detected before its symptoms appear ? Explain the principle involved. |
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Answer» Yes. Very low concentration of a bacteria or virus (when the symptoms of the disease are not visible) can be detected by amplification of their nucleic acid through PCR. rDNA technology, Enzyme Linked Immuno-sorbent Assay are some of the techniques that serve the purpose of early diagnosis. |
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| 249. |
Which is the correct order of atomic radii?A. `Mg lt Al lt Na lt K`B. `Al lt Mg lt Na lt K`C. `K lt Na lt Mg lt Al`D. None of these |
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Answer» Correct Answer - B In a period , as we move from left to right atomic size decreases. |
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| 250. |
Which of the following is correct order of atomic radii?A. `O lt S lt C lt S e`B. `O lt S e lt S lt C`C. `O lt C lt S lt Se`D. `C lt O lt S lt S e` |
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Answer» Correct Answer - C Atomic size decrease from left to right in a period and increases from top to bottom in a group. |
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