1050 + Interview Questions in CLASS-11 IN GENERAL AWARENESS Page 9 InterviewSolution

401.	Given figure is of filamentous. Blue green alga Nostoc. Identify the parts marked as A and B and select the correct option. A. `{:(,A,B),((a),"Heterocyst","Mucilaginous sheath"):}`B. `{:(,A,B),((b),"Vegetative cell","Mucilaginous sheath"):}`C. `{:(,A,B),((c),"Trichomes","Cell wall"):}`D. `{:(,A,B),((d),"Muclilaginous sheath","Heterocyst"):}`
Answer» Correct Answer - A

Discussion

402.	Viruses areA. Bigger than fungi (yeast)B. Larger than bacteriaC. Smaller than viroidsD. Smaller than bacteria
Answer» Correct Answer - D Viruses are smalleer than bacteria.

Discussion

403.	Refer to the given figure of Paramecium caudatum and select the option that correctly identifies A,B,C and D A. `{:(,A,B,C,D),((a),"Cell wall","Cilia","Contractile vacuole","Cytostome"):}`B. `{:(,A,B,C,D),((b),"Pellicle","Cilia","Contractile","Cytostome"):}`C. `{:(,A,B,C,D),((c),"Pellicle","Cilia","Marcronucleus","Cyostome"):}`D.
Answer» Correct Answer - C

Discussion

404.	Which fungus does not consist a long, slender thread like structure called hyphae ?A. YeastB. MushroomC. ToadstoolD. Puffball
Answer» Correct Answer - A Yeast do not consist of a long, slender thread like structure called hypae as it is unicellular.

Discussion

405.	Oxygen is not produced during photosynthesis byA. Green sulphur bacteriaB. NostocC. CycasD. Chara
Answer» Correct Answer - A Oxygen is not produced during photosynthesis by green sulphur bacteria.

Discussion

406.	Select the wrong statementA. Cell wall is present in members of Fungi and Plantae.B. Mushrooms belong to Basidiomycetes.C. Pseudopodia are locomotory and feeding structures in Sporozoans.D. Mitochondria are the powerhouse of the cell in all kingdoms except Monera.
Answer» Correct Answer - C Pseudopodia are locomotory and feeding strucutres in Amoeboid protozoans.

Discussion

407.	Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?A. The ionisation energy of hydrogen is too high for group of alkali metals, but too low of halogen groupB. Hydrogen can form compounds with all other elements.C. Hydrogen is much lighter element than the alkali metals or the halongensD. None of the above
Answer» Correct Answer - A The Ionisatin energy of hydrogen is too high for group of alkali metals, but too low for halogen group.

Discussion

408.	In comparison with alkali metals, the electron affinity of halogens isA. very highB. vergy lowC. nearly sameD. exactly same
Answer» Correct Answer - A Because it can easily accept an `e^(-)`

Discussion

409.	The graph of `IE_(1)` or `Delta_(1)H_(1)^(ɵ)` versus atomic number `(Z)` is given below: Which of the following statement is correct ?A. Alkali metals are at the maxima and noble gases at the minima.B. Noble gases are at the maxima and alkali metals at the minima.C. Transition elements are at the maxima.D. Minima and maxima do not show any regular behaviour.
Answer» Correct Answer - B Noble gases are at the maxima which have closed electron shells and very stable electronic configuration. On the other hand, minima occurs at the alkali metals and their low `IE_(1)` can be correlated with their high reactivity.

Discussion

410.	Assertion (A) : `IE_(1)` of `Mg` is greater than that of `Al`. Reason (R ) : It is easier to remove an electron fro `3s` orbital than from `3p` orbital.A. If both A and R are correct and R is the correct explanation for A.B. If both A and R are correct and R is not the correct explanation for A.C. If A is correct and R is incorrectD. If A is incorrect and R is correct
Answer» Correct Answer - C `IE_(1)` of `Mg gt IE_(1)` of `Al`. Assertion is correct. Correct reason : It is easier to remove an electron from `3p` orbital than from `3s` orbital (due to pentration effect).

Discussion

411.	Loundess of sound is transferred toA. Increased movement of basilar fibres of cochleaB. Increased vibration of semicircular canalsC. Vibrations of endolymphatic sacD. Vibrations of typmpanic bulla
Answer» Correct Answer - A Loudness of sound is transferred to increased movement of basilar fibres of cochlea.

Discussion

412.	Lichen is an association betweenA. Fungi and bryophytesB. Fungi and algaeC. Algae and pteridophyteD. Algae and bacteria
Answer» Correct Answer - B Lichen is an association between Fungi and algae.

Discussion

413.	All sensory pathways to the correct cortex synapse at theA. ThalamusB. PonsC. HypothalamusD. Cerebellum
Answer» Correct Answer - B All sensory pathways to cerebral cortex synapse at pons.

Discussion

414.	The genetic material of a viroid isA. DNAB. RNAC. ProteinD. Carbohydrate
Answer» Correct Answer - B The genetic material of a viroid is RNA.

Discussion

415.	The amount of CSF in the cranial cavity isA. 50 mlB. 140 mlC. 1 litreD. 1.5 ml
Answer» Correct Answer - B Amount of CSF in cranial cavities is 140 ml.

Discussion

416.	A virus like naked pathogenic particle of single-stranded circular RNA filament without a protein covering is known asA. Potato Spindle Tuber Viriod (PSTVd)B. Mumps virusC. Polyoma virusD. Tobacco mosaic virus.
Answer» Correct Answer - A A virus like naked pathogenic particle of single-stranded circular RNA filament without a protein covering is known as Potato Spindle Tuber Virus (PSTV) viriod.

Discussion

417.	Cellulose is made ofA. Unbranched chain of glucose molecules linked by `alpha-1,6` glycosidic bondsB. Unbranched chain of glucose molecules linked by `beta-1,4` glycosidic bondsC. Branched chain of glucose molecules having `alpha-1,6` glycosidic bonds at the site of branchingD. Branched chain of glucose molecules with `alpha-1` and `beta-1,4` linked bonds at the site of branching
Answer» Correct Answer - B Cellulose is made of unbranched chain of glucose molecules linked by `beta-1,4` glycosidic bonds.

Discussion

418.	The fungus which grows on dungs is calledA. HemicolousB. LignicolousC. CoprophilousD. Fungicolous
Answer» Correct Answer - C The fungus, which grows on dung is called Coprophilous.

Discussion

419.	What are molecular scissors ? Where are they obtained from ?
Answer» Molecular scissors are the restriction enzymes which cut the DNA at specific locations usually they are obtained from Bacteria.

Discussion

420.	What are virulent phages ? Give an example.
Answer» T-even phages that attack the bacterium E.coli cause lysis of the cells and are called virulent phages Eg : Bacteriophage. Bacteriophage.

420.

What are virulent phages ? Give an example.

Answer»

T-even phages that attack the bacterium E.coli cause lysis of the cells and are called virulent phages

Eg : Bacteriophage. Bacteriophage.

Discussion

421.	The five kingdom classification was proposed byA. R. H. WhittakerB. C. LinnaeusC. A. RoxbergD. Virchow
Answer» Correct Answer - A

Discussion

422.	What are the characteristic features of Euglenoids?
Answer» Some characteristic features of Euglenoids are as follows. `implies` Euglenoids (such as Euglena) are unicellular protists commonly found in fresh water. `implies` Instead of cell wall, a protein-rich cell membrane known as pellicle is present. `implies` They bear two flagella on the anterior end of the body. `implies` A small light sensitive eye spot is present. `implies` They contain photosynthetic pigments such as chlorophyll and can thus prepare their own food. However, in absence of light, they behave similar to heterotrophs by capturing other small aquatic organisms. `implies` They have both plant and animal-like features, which makes them difficult to classify

Discussion

423.	What property did Mendelev use to classify the elements in his perodic table.
Answer» Correct Answer - Atomic masses atomic masses (i.e. mass numbers).

Discussion

424.	Which one of the following statements is wrong ?A. Cyanobacteria are also called blue-green-algae.B. Golden algae are also called desmids.C. Eubacteria are also called false bacteria.D. Phycomycetes are also called algal fungi.
Answer» Correct Answer - C `` Eubacteria are also called true bacteria. `` Phycomycetes are also called algal fungi.

Discussion

425.	In the long form of the perodic table, physical and chemical properties of the elements are a periodic function of their `"_______"` .
Answer» Correct Answer - Atomic numbers Atomic numbers

Discussion

426.	Solve sin–1 [dy/dx] = x + y.
Answer» dy/dx = sin (x + y) x + y = t 1 + (dy/dx) = dt/dx (dt/dx) – 1 = sin t dt/dx = 1 + sin t dt/(1 + sin t) = dx Integrating both sides we get ∫ dt/(1 + sin t) = ∫ dx ∫ (1 − sin t/(cos² t)) dt = x + c ∫ sec² t dt – ∫ tan t.sec t dt = x + c tan t – sec t = x + c ⇒ tan (x + y) – sec (x + y) = x + c

426.

Solve sin–1 [dy/dx] = x + y.

Answer»

dy/dx = sin (x + y)

x + y = t

1 + (dy/dx) = dt/dx

(dt/dx) – 1 = sin t

dt/dx = 1 + sin t

dt/(1 + sin t) = dx

Integrating both sides we get

∫ dt/(1 + sin t) = ∫ dx

∫ (1 − sin t/(cos² t)) dt = x + c

∫ sec² t dt – ∫ tan t.sec t dt = x + c

tan t – sec t = x + c ⇒ tan (x + y) – sec (x + y) = x + c

Discussion

427.	Electronic configuration of chalcogens in their outermost orbit isA. `s^(2)p^(3)`B. `s^(2)p^(5)`C. `s^(2)p^(4)`D. `p^(6)`
Answer» Correct Answer - C Chalcogens are oxygen family.

Discussion

428.	Phospholipids areA. AmphibolicB. AmphipathicC. HydrophobicD. Hydrophilic
Answer» Correct Answer - B Phospholipids are amphipathic.

Discussion

429.	The fungus, commonly known as bread mould isA. AlternariaB. RhizopusC. PenicillumD. Aspergillus
Answer» Correct Answer - B The fungus, commonly known as bread mould is Rhizopus.

Discussion

430.	Which is associated with asexual reproduction in fungiA. AscosporesB. BasidiosporesC. ZygosporesD. Conidiospores
Answer» Correct Answer - D Conidiospores is associated with asexual reproduction in fungi.

Discussion

431.	Asexual spores are generally absent inA. UstilagoB. TrichodermaC. NeurosporaD. Yeast
Answer» Correct Answer - A Asexual spore are generally absent in Ustilago

Discussion

432.	Dinoflagellates are mostlyA. TerrestrialB. MarineC. ThermohalineD. Fresh water
Answer» Correct Answer - B Dinoflagellates are mostly Marine.

Discussion

433.	Fungi show asexual reproduction by all of the following kinds of spores exceptA. conidiaB. oosporesC. zoosporesD. basidiospores.
Answer» Correct Answer - B Asexual reproduction in fungi occurs through the fomation of spores. Spores are single-celled propagules which separate from the parent organism and can get dispersed. E.g., zoospores, sproangiospores, chlamydospores, oidia, conidia, etc. Oospore is the product of sexual reproduction.

Discussion

434.	Chief producers in the oceasns areA. ChrysophytesB. EuglenoidsC. DesmidsD. Diatoms
Answer» Correct Answer - D Chief producers in the occeans are Diatoms.

Discussion

435.	True or False type questions : (i) Two-kingdom classification is the oldest and was proposed by Robert H. Whittaker in 1969. (ii) Euglena is a unicellular organism which has both animal and plant features. (iii) Bacteria and fungi are called decomposers or reducers. (iv) Liverworts and masses belong to the kingdom plantae. (v) Genetic material in eukaryotes is circular, double-stranded, helical DNA, not enclosed by a nuclear envelope. (vi) Blue-green algae (cyanobacteria) are the photosynthetic monerans.
Answer» (i) False (ii) True (iii) True (iv) True (v) False (vi) True.

Discussion

436.	Beggiotoa is aA. ChemoautotrophB. PhotoautotrophC. PhotoheterotrophD. Chemoheterotroph
Answer» Correct Answer - A Beggiotoa is a Chemoautotroph.

Discussion

437.	Trichodesmium erythraeum which gives colour to Red Sea isA. Green algaB. Blue-green algaeC. Red algaD. Brown alga
Answer» Correct Answer - B Trichodesmiumerythreum which gives colour to red sea is Blue-green alga.

Discussion

438.	Which of the following is/are partially heterotrophic ?A. Parasites like CuscutaB. Insectivorous plants like Bladderwort and Venus fly trapC. Both A and BD. None of the above
Answer» Correct Answer - C Parasites like Cuscuta and Isectivorous plants like Bladderwort and Venus fly trap are partially heterotrophic.

Discussion

439.	Partially independent sporophyte is found inA. RicciaB. LycopodiumC. FunariaD. Cycas
Answer» Correct Answer - C Partially independent sporophyte is found in Funaria.

Discussion

440.	Viroids haveA. ssRNA enclosed in capsidB. ssDNA enclosed in capsidC. ssRNA without capsidD. ssDNA without capsid
Answer» Correct Answer - C Viroids have ssRNA without capsid.

Discussion

441.	Organism which obtains their nutrition from dead and decaying matter (detritus) is calledA. ParasiticB. HolophyticC. SaprophyticD. Holozoic
Answer» Correct Answer - C Organism which obtains their nutrition from dead and decaying matter (detritus) are called saprophytic.

Discussion

442.	Similarity between fungi and bacteriophage lies inA. Cell membraneB. Cell wallC. DNAD. Organelles
Answer» Correct Answer - C DNA is present in both bacteriophage and fungi.

Discussion

443.	Edible part of mushroom isA. BasidicarpB. Fungal hyphaeC. Primary myceliumD. Basidiospore
Answer» Correct Answer - A Edible part of mushroom is Basidicarp.

Discussion

444.	Give the botanical name of an edible mushroom.
Answer» Agaricus campestris.

Discussion

445.	The IUPAC name of compound `H_(3)COOC-underset(CH_(2)OH)underset("\| " )(CH)-COOCH_(3)` is:A. 2-(hydroxy methyl)methyl propanedioateB. dimethyl-2-(hydroxy methyl) propanedioateC. 2-(hydroxy methyl)dimethyl propanedioateD. none of the above
Answer» Correct Answer - B

Discussion

446.	Which of the following is not correct?A. Ionic radius does not after the physical and chemical properties of an ionic compound.B. For ions derived from elements in different groups, the comparison in size is meaningfual only if the ions are isolectronic.C. Among isolectronic cations, the size decreases as the charge on cation increases.D. Among isolectronic anious, the size increases as the charge on anion increases.
Answer» Correct Answer - A The three-dimensional structure and hence, the properties of an ionic compounds depend on the relative sizes of its cations and anions. Isoelectronic cations are smaller than anions: `r_(Na+)lt r_(F^(-)),r_(A1^(3+))lt r_(Mg^(2+)) lt_(Na^(+)), r_(O^(2)) gt r_(F^(-))`

Discussion

447.	Consider the following species: `N^(3-)`,`O^(2-)`,`F^(ө)`,`Na^(o+)`,`Mg^(2+)` and `Al^(3+)` a. What is common in them? b. Arrange them in the order of increasing ionic radii.A. All have same ionic radii.B. All are isoelectronic species having 10 electrons.C. All of them belong to the third period.D. The nature of oxides of all the ions is basic.
Answer» Correct Answer - B

Discussion

448.	Between C and CO, which is a better reducing agent for ZnO?
Answer» Case – I : [Coke as reducing agent] ZnO + C → Zn + CO, ∆G° becomes lesser as the T is more then 1120K. Case – II : [CO as reducing agent] ZnO + CO₂ → Zn + CO, ∆G° becomes lesser when the T is more then 1323K. → The value of ∆G° is negative for a reaction to occur. → In the equation (1) ∆G° becomes negative at low temperature- so equation (1) is feasible i.r. C is a better reducing agent for ZnO.

448.

Between C and CO, which is a better reducing agent for ZnO?

Answer»

Case – I : [Coke as reducing agent]

ZnO + C → Zn + CO,

∆G° becomes lesser as the T is more then 1120K.

Case – II : [CO as reducing agent]

ZnO + CO₂ → Zn + CO, ∆G° becomes lesser when the T is more then 1323K.

→ The value of ∆G° is negative for a reaction to occur.

→ In the equation (1)

∆G° becomes negative at low temperature- so equation (1) is feasible i.r. C is a better reducing agent for ZnO.

Discussion

449.	What is rate determining step in a complex reaction?
Answer» The overall rate of a reaction is controlled by the slowest step in a reaction is called the rate determining step in a complex reaction.

Discussion

450.	How is molar mass related to the elevation in boiling point of a solution?
Answer» The expression for elevation of boiling point is ∆T_b = (K_b x 1000 x w)/(m x w) = K_b = molal elevation constant w = Weight of solute W = Weight of solvent m = molar mass of solute Molar mass of solute m = (K_b x 1000 x w)/(∆T_b x w) ∴ Molar mass of solute (m) and elevation of boiling point (∆T_b) are inversely related.

450.

How is molar mass related to the elevation in boiling point of a solution?

Answer»

The expression for elevation of boiling point is

∆T_b = (K_b x 1000 x w)/(m x w) = K_b = molal elevation constant

w = Weight of solute

W = Weight of solvent

m = molar mass of solute

Molar mass of solute m = (K_b x 1000 x w)/(∆T_b x w)

∴ Molar mass of solute (m) and elevation of boiling point (∆T_b) are inversely related.

Discussion

Explore topic-wise InterviewSolutions in .

Viruses areA. Bigger than fungi (yeast)B. Larger than bacteriaC. Smaller than viroidsD. Smaller than bacteria

Which fungus does not consist a long, slender thread like structure called hyphae ?A. YeastB. MushroomC. ToadstoolD. Puffball

Oxygen is not produced during photosynthesis byA. Green sulphur bacteriaB. NostocC. CycasD. Chara

Select the wrong statementA. Cell wall is present in members of Fungi and Plantae.B. Mushrooms belong to Basidiomycetes.C. Pseudopodia are locomotory and feeding structures in Sporozoans.D. Mitochondria are the powerhouse of the cell in all kingdoms except Monera.

In comparison with alkali metals, the electron affinity of halogens isA. very highB. vergy lowC. nearly sameD. exactly same

Loundess of sound is transferred toA. Increased movement of basilar fibres of cochleaB. Increased vibration of semicircular canalsC. Vibrations of endolymphatic sacD. Vibrations of typmpanic bulla

Lichen is an association betweenA. Fungi and bryophytesB. Fungi and algaeC. Algae and pteridophyteD. Algae and bacteria

All sensory pathways to the correct cortex synapse at theA. ThalamusB. PonsC. HypothalamusD. Cerebellum

The genetic material of a viroid isA. DNAB. RNAC. ProteinD. Carbohydrate

The amount of CSF in the cranial cavity isA. 50 mlB. 140 mlC. 1 litreD. 1.5 ml

A virus like naked pathogenic particle of single-stranded circular RNA filament without a protein covering is known asA. Potato Spindle Tuber Viriod (PSTVd)B. Mumps virusC. Polyoma virusD. Tobacco mosaic virus.

The fungus which grows on dungs is calledA. HemicolousB. LignicolousC. CoprophilousD. Fungicolous

What are molecular scissors ? Where are they obtained from ?

What are virulent phages ? Give an example.

The five kingdom classification was proposed byA. R. H. WhittakerB. C. LinnaeusC. A. RoxbergD. Virchow

What are the characteristic features of Euglenoids?

What property did Mendelev use to classify the elements in his perodic table.

Which one of the following statements is wrong ?A. Cyanobacteria are also called blue-green-algae.B. Golden algae are also called desmids.C. Eubacteria are also called false bacteria.D. Phycomycetes are also called algal fungi.

In the long form of the perodic table, physical and chemical properties of the elements are a periodic function of their `"_______"` .

Solve sin–1 [dy/dx] = x + y.

Electronic configuration of chalcogens in their outermost orbit isA. `s^(2)p^(3)`B. `s^(2)p^(5)`C. `s^(2)p^(4)`D. `p^(6)`

Phospholipids areA. AmphibolicB. AmphipathicC. HydrophobicD. Hydrophilic

The fungus, commonly known as bread mould isA. AlternariaB. RhizopusC. PenicillumD. Aspergillus

Which is associated with asexual reproduction in fungiA. AscosporesB. BasidiosporesC. ZygosporesD. Conidiospores

Asexual spores are generally absent inA. UstilagoB. TrichodermaC. NeurosporaD. Yeast

Dinoflagellates are mostlyA. TerrestrialB. MarineC. ThermohalineD. Fresh water

Fungi show asexual reproduction by all of the following kinds of spores exceptA. conidiaB. oosporesC. zoosporesD. basidiospores.

Chief producers in the oceasns areA. ChrysophytesB. EuglenoidsC. DesmidsD. Diatoms

Beggiotoa is aA. ChemoautotrophB. PhotoautotrophC. PhotoheterotrophD. Chemoheterotroph

Trichodesmium erythraeum which gives colour to Red Sea isA. Green algaB. Blue-green algaeC. Red algaD. Brown alga

Which of the following is/are partially heterotrophic ?A. Parasites like CuscutaB. Insectivorous plants like Bladderwort and Venus fly trapC. Both A and BD. None of the above

Partially independent sporophyte is found inA. RicciaB. LycopodiumC. FunariaD. Cycas

Viroids haveA. ssRNA enclosed in capsidB. ssDNA enclosed in capsidC. ssRNA without capsidD. ssDNA without capsid

Organism which obtains their nutrition from dead and decaying matter (detritus) is calledA. ParasiticB. HolophyticC. SaprophyticD. Holozoic

Similarity between fungi and bacteriophage lies inA. Cell membraneB. Cell wallC. DNAD. Organelles

Edible part of mushroom isA. BasidicarpB. Fungal hyphaeC. Primary myceliumD. Basidiospore

Give the botanical name of an edible mushroom.

The IUPAC name of compound `H_(3)COOC-underset(CH_(2)OH)underset("| " )(CH)-COOCH_(3)` is:A. 2-(hydroxy methyl)methyl propanedioateB. dimethyl-2-(hydroxy methyl) propanedioateC. 2-(hydroxy methyl)dimethyl propanedioateD. none of the above

Between C and CO, which is a better reducing agent for ZnO?

What is rate determining step in a complex reaction?

How is molar mass related to the elevation in boiling point of a solution?