Question # 1

The reaction of ionic compound is very ________________ in solution.

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Slow

Fast

Medium

Nil

The bond in covalent compound is ________________

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Covalent

Ionic

Dative

Couple

Solid particles possess which one of the following motions?

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rotational motions

vibrational motions

translation motions

both translational and vibrational motions

The base of modern periodic table is

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Atomic number (Z)

Mass number (A)

Avogadro's Number

Quantum Number

The practical unit of concentration is

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%v/v

%v/m

%m/m

M

Gases produced in Nelson's cell are:

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H₂ and O₂

H₂ and CI₂

H₂ and N₂

CI₂ and O₂

Bucky Balls are used as ________________

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Cutting

Grafting

Lubricants

Nil

Which of the following can accommodate 18 electrons?

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K

L

M

N

Sodium - potassium alloy is used in nuclear reactor as a:

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catalyst

coolant

reactant

absorber

The atomic number of potassium is:

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11

15

18

19

Graphite is ___________

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Hard

Nil

Soft

Nil

What is pOH of 0.01 M solution of HCl?

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1

4

12

13

Acids turn

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Blue litmus red

Red litmus blue

Blue litmus green

Blue litmus blue

The salts of which element are present in detergent that causes the rapid growth of algae in water bodies is.

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Phosphate

Calcium

Sodium

All of them

Brown hair contains.

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Iron compound

Copper compound

titanium compound

Both a and b

Pitch is black residue of

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Coke

Coal-tar

Coal

Coal gas

Molecular formula of stearic acid is.

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C₁₅H₃₁ COOH

C₁₂H₁₅COOH

C₁₅H₃₀COOH

C₁₇H₃₄COOH

Which compound protect teeth from diseases?

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Fluorine compound

Chlorine compound

Iodine compound

Bromine compound

At which region all weather occurs?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Specific Heat capacity of water is about.

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4.0 Jg^-1 K^-1

4.1 Jg^-1K^-1

4.2 Jg^-1K^-1

4.3 Jg^-1K^-1

When crude oil is heated in the fractionating tower:

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Vapour of higher boiling point fraction condense first in the lower part of the tower.

Vapours of lower boiling point fraction condense first in the lower part of tower.

Vapour of higher boiling point condense lather in the upper part of tower.

Vapours of higher boiling point never condense.

Which is disaccharide?

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Glucose

Fructose

Sucrose

Starch

Anode rays were discovered by

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J. Stoney

Rutherford

J.J. Thomson

Goldstein

a zero order reaction is one is which

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Reactants do not react

One reactant is in large excess

Concentration of reactant do not change with passage of time

Rate is of affected by changing concentration of reactants

In azeotropic mixture showing positive deviation from Raoult's law the volume of the mixture is

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Slightly more than the total volume of the components

Slightly less than the total volume of the components

Equal to the total volume of the components

None of these

The total number of protons and neutrons present in the nucleus of an atom is called.

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Mass number

Atomic number

Molecular mass

Relative atomic mass

the volume occupied by 1.4 of N2 at S.T.P is

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2.24 dm3

22.4 dm3

1.12 dm3

112 cm3

In silver oxide battery, the cathode is mad up of.

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AgO

Ag2O

Ag2O3

Ag

A substance which rerareds the rate of a reaction is called

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Inhibitor

Activator

Auto-catalyst

None of these

According to Boyle's law which parameters give a straight line parallel to x -axis when we plot a graph between

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P and V

P and 1/V

P and PV

V and T

Carbon atom in methane in hybridized.

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sp3

Sp2

Sp

dsp3

During chromatography strip should be dipped into solvent mixture to a depth of.

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3-4 mm

4-5 mm

5-6 mm

6-7 mm

Which of the following species has unpaired electrons in anti-bonding molecular orbitals

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O₂⁺²

N₂^-2

B₂

F₂

Keeping in view size of atoms ,which order is the correct one.

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Mg > Sr

Ba > Mg

Lu > Ce

Cl > I

The quality of petroleum is determined by

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Decane number

Octane number

Hexane number

Gold number

Aluminum reacts with nitrogen to form

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AIN

Al₂N

Al₂N₃

Al₄N₆

The most reactive alcohol when O-H bond breaks is

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Tertiary alcohol

Secondary alcohol

Primary alcohol

Methyl alcohol

Which of the following hydrogen halide is the weakest acid in solution.

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HF

HBr

HI

HCl

The enzyme which bring about exchange of functional group between two compounds is called.

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Hydrolases

Transferase

Lyases

Ligases

Group VI B of transition elements contains.

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Zn, Cd, Hg

Fe, Ru,Os

Cr, Mo, W

Mn, Te, Re

The pH of unpolluted rain water should be

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5.00

5.60

6.50

7.00

Bromine can be liberated from KBr solution by the action of.

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I2 solution

Chlorine

NaCl

KI

Which one of the following is not a heterocyclic compound.

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Furan

Thiophene

Pyridine

Aniline

------------------- is not a nucleophile

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H₂O

NO₃

BF₃

NH₃