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51.

A single substance that exists in two or more forms is calledA. polymorphousB. amorphousC. isomorphousD. monomorphous

Answer» Correct Answer - A
52.

The correct sequence of the atomic layers in cubic close packing isA. ABABAB. ABACABACC. ABCABCD. AABBAABB

Answer» Correct Answer - A::B::C
53.

The volume of atoms present in body centred cubic unit cell of a metal of atomic radius r is,A. `(16)/(3)pi r^(3)`B. `(8)/(3) pi r^(3)`C. `(12)/(3)pi r^(3)`D. `(24)/( 3) pi r^(3)`.

Answer» Correct Answer - B::C
54.

If r is the radius of an atom in face-centred cubic unit cell of edge length a thenA. `r=(a)/(2sqrt(2))`B. `r=(4)/(sqrt(3))a`C. `r=2sqrt(2)a`D. `r=sqrt((3)/(4))a`

Answer» Correct Answer - A::B
55.

The osmotic pressure of 0.2 M KCl solution at 310 K isA. 10.17 atmB. 5.084 atmC. 8.36 atmD. 12.2 atm

Answer» Correct Answer - A
56.

Which of the following amines cannot be prepared by Gabriel phthalimide synthesis ?A. sec-PropylamineB. tert-ButylamineC. 2-PhenylethylamineD. N-Methyl benzyl amine

Answer» Correct Answer - A::B::D
57.

Which of the following is a regenerated fibre?A. Nylon-6B. TeryleneC. Nylon-66D. Acetate rayon

Answer» Correct Answer - A::C::D
58.

Which of the following is polyamide ?A. TeflonB. Nylon-6,6C. TeryleneD. Bakelite

Answer» Correct Answer - B
59.

Terylene is aA. vegetable fibreB. protein fibreC. polyester fibreD. polyamide fibre

Answer» Correct Answer - B::C
60.

Which of the following is a copolymer ?A. OrlonB. TeflonC. PVCD. PHBV

Answer» Correct Answer - B::D
61.

Nylon thread contains the polymerA. polyamideB. polyvinylC. PolyesterD. Polyethylene

Answer» Correct Answer - A::D
62.

Natural rubber is a polymer ofA. StyreneB. ButadieneC. Vinyl chlorideD. Isoprene

Answer» Correct Answer - D
63.

Which one is the natural polyamide polymer ?A. Cuprammonium silkB. WoolC. Perlon-LD. Jute

Answer» Correct Answer - B
64.

Thermosetting polymer isA. Nylon-6B. Nylon-6,6C. BakeliteD. SBR

Answer» Correct Answer - A::B::C
65.

Which one of the following is an addition polymer ?A. BakeliteB. Nylon-6,6C. PolystyreneD. Terylene

Answer» Correct Answer - C
66.

The number of asymmetric carbon atom in glucose areA. 2B. 3C. 4D. 5

Answer» Correct Answer - C::D
67.

The lowest stability of carbocation among the compoundsA. B. C. D.

Answer» Correct Answer - A::B::C
68.

Night blindness is due to the deficiency ofA. vitamin AB. vitamin BC. vitamin CD. vitamin D

Answer» Correct Answer - A
69.

Secondary nitroalkanes react with nitrious acid to formA. red solutionB. blue solutionC. green solutionD. yellow solution

Answer» Correct Answer - B
70.

Acetoxime on catalytic reduction givesA. Acetic acidB. acetic anhydrideC. ethylamineD. isopropylamine

Answer» Correct Answer - A::D
71.

The ores that are concentrated by floatation method are :A. CarbonatesB. SulphidesC. OxidesD. Phosphates

Answer» Correct Answer - B::D
72.

Which of the following carbonyl compounds undergoes self redox reaction in presence of concentrated base ?A. 3-MethylpentanalB. 2-ChlorobutanalC. 2,2-DimethylpropanalD. tert-Butyl methyl ketone

Answer» Correct Answer - A::B::C::D
73.

Which of the following carbonyl compounds undergoes aldol condensation ?A. BenzaldehydeB. BenzophenoneC. AcetophenoneD. tert-Butyl phenyl ketone

Answer» Correct Answer - A::C
74.

Insulin is a/anA. hormoneB. antibioticC. antisepticD. vitamin

Answer» Correct Answer - A
75.

Which one of the following is a condensation polymer ?A. NylonB. PolytheneC. PVCD. Teflon

Answer» Correct Answer - A
76.

In metabolic process the maximum energy is given byA. carbohydratesB. proteinsC. vitaminsD. fats

Answer» Correct Answer - A::D
77.

Stachyose isA. monosaccharidesB. disaccharidesC. trisaccharidesD. tetrasaccharides

Answer» Correct Answer - A::C::D
78.

Which mixture is used for respiration by deep sea divers?A. `He+O_(2)`B. `Ne+O_(2)`C. `Ar+O_(2)`D. `Kr+O_(2)`

Answer» Correct Answer - A::B
79.

Chromyl chloride test is forA. chloride saltB. nitrate saltC. thiosulphate saltD. sulphate salt

Answer» Correct Answer - A::C::D
80.

Constituents of dettol areA. terpineol and chloroxylenolB. chloroamphenicol and terpineolC. phenol and chloroxylenolD. novestrol and equanil

Answer» Correct Answer - A::C::D
81.

The electronic configuration of Lanthanum isA. `[Kr]4f^(1)5s^(2)`B. `[Xe]5d^(1)6s^(2)`C. `[Xe]4f^(1)5d^(1)6s^(2)`D. `[Rn]5f^(1)6d^(1)7s^(2)`

Answer» Correct Answer - A::B::D
82.

The properties of Zr and Hf are similar becauseA. both have same atomic radiiB. both belong to d-blockC. both belong to same seriesD. both have same number of electrons

Answer» Correct Answer - A::B::C::D
83.

The boiling point of water at high altitude is low, becauseA. the temperature is lowB. the atmospheric pressure is lowC. the temperature is highD. the atmospheric pressure is high

Answer» Correct Answer - A::B::C
84.

The units of `K_(b)` areA. `K mol^(-1)kg^(-1)`B. `K kg^(-1)`molC. K Kg `mol^(-1)`D. `Kg mol^(-1)`

Answer» Correct Answer - A::C
85.

0.05 m urea solution will have freezing point (`K_(f)` = 1.86 K kg `"mol"^(-1)` )A. 273.093 KB. 273.186 KC. 272.907 KD. 272.814 K

Answer» Correct Answer - B::C
86.

The oxidation state of sulphur in peroxy disulphuric acid isA. `+2`B. `+3`C. `+4`D. `+6`

Answer» Correct Answer - D
87.

The effciency of the hydrogen-oxygen fuel cell is aboutA. 0.2B. 0.4C. 0.7D. 0.9

Answer» Correct Answer - C
88.

Which of the following solutions shows maximum depression in freezing point?A. 0.5 M `Li_(2)SO_(4)`B. 2M NaClC. 0.5 M `Al_(2)(SO_(4))_(3)`D. 0.5 M `BaCl_(2)`

Answer» Correct Answer - A::B::C::D
89.

Oxygen molecule shows:A. ParamagnetismB. DimagnetismC. Ferro magnetismD. Ferri magnetism

Answer» Correct Answer - A
90.

The structure of `IF_(7)` isA. TetrahedralB. OctahedralC. Trigonal bipyramidalD. Pentagonal bipyramidal

Answer» Correct Answer - A::B::D
91.

In the reaction `a+3B rarr 2C`, the rate of formation of C isA. the same as rate of consumption of AB. the same as the rate of consumption of BC. twice the rate of consumption of AD. 3/2 times the rate of consumption of B

Answer» Correct Answer - A::C
92.

If for a reaction `Delta H` is negative and `Delta S` is positive then the reaction isA. spontaneous at all temperaturesB. non-spontaneous at all temperaturesC. spontaneous only at high temperaturesD. spontaneous only at low temperature

Answer» Correct Answer - A::B::C::D
93.

For which reaction `Delta H = Delta U` ?A. `H_(2(g))+1/2 O_(2(g))rarrH_(2)O_((1))`B. `C_(6)H_(12)O_(6(s))+6O_(2(g))rarr6CO_(2(g))+6H_(2)O_((1))`C. `MgCO_(3(s))rarrMgO_((s))+CO_(2(g))`D. `CO_(2(g))+C_((s))rarr2CO_((g))`

Answer» Correct Answer - A::B::C
94.

Which of the following is an intensive property ?A. EntropyB. WeightC. Refractive indexD. Volume

Answer» Correct Answer - A::C::D
95.

The compound having general formula is calledA. diesterB. acid anhydrideC. hemiacetalD. acetal

Answer» Correct Answer - A::C::D
96.

Formalin is 40% aqueous solution ofA. MethanalB. Methanoic acidC. MethanolD. Methanamine

Answer» Correct Answer - A
97.

The packing fraction for a body-centred cube isA. 0.42B. `0.53`C. `0.68`D. `0.82`

Answer» Correct Answer - C
98.

In Nernst equation, the constant 0.0592 at 298 K represents the value ofA. `(RT)/(nF)`B. `(RT)/(F)`C. `(2.303 RT)/(nF)`D. `(2.303RT)/(F)`

Answer»

Correct option is: (D) \(\frac{2.303 \ RT}{F}\)

According to Nernst  equation

E = \(E_0 - \frac {RT}{nF}\) ln Q

or E = \(E_0 - \frac {8.314 \times 298 \times 2.303}{n\times 96500}\) log Q.

E = \(E_0 - \frac {0.0592}{n}\) log Q.

Therefore, \(\frac{2.303 \ RT}{F}\) = 0.0592

Correct Answer - B::C::D
99.

The example of aldopentose isA. arabinoseB. glucoseC. fructoseD. sucrose

Answer» Correct Answer - A::B
100.

Milk sugar isA. sucroseB. lactoseC. maltoseD. glucose

Answer» Correct Answer - A::B::C