Question # 1

The example of solid solute in gas solvent is

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butter

Sugar in water

Smoke in air

Opals

The elements of group 3 to 12 are called

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Normal elements

Transition elements

Radioactive elements

None of these

________________ observed that formation of covalent bonds.

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Rutherford

G.N Lewis

Both a and b

Bohar's

___________ is a pure substance that can be broken down.

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Matter

Element

Mass

Mixture

Which of the following can be separated by physical means?

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Mixture

Element

Compound

Radical

Which one of the following pair has the same mass?

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1 mole of CO and 1 mole of N₂

1 mole of CO and 1 mole of CO₂

1 mole of O₂ and 1 mole of N₂

1 mole of O₂ and 1 mole of CO₂

Which one of the following is heterogeneous mixture?

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milk

ink

milk of magnesia

sugar solution

Intermolecular forces are of three types and are collectively called ____________

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Nelson' forces

Vander Waal's forces

Neurons

Nil

Which one is strong electrolyte ?

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NH4OH

NaOH

a & b

Nil

Which of the following compound is not directional in its bonding?

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CH⁴

KBr

CO²

H₂O

............. are sonorous.

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Metals

Solids

Metals

Force

When bones are heated they give.

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Starch

Gelatin

Fats

Oils

A disease is caused by excess of bile pigments in the blood is.

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Typhoid

Jaundice

Cholera

Dysentery

Photosynthesis process produce.

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Carbondioxide

Glucose and oxygen

Carbon di oxide

glucose and carbondoxide

A conjugate base is a specie formed by donating a.

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Proton

Electron pair

Neutron

Electron

Which gas is in involved in ozone depletion?

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Nitrogen

CFC's

Chlorine

All of them

pH of neutral solution is always.

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6

5

7

10

Alkanes do not react in

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Diffused sunlight

Dark

Bright sunlight

None of these

The color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

Formula of acetaldehyde is:

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Main component of natural gas is

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Methane

propane

Butane

Propene

Forest fires and burning of wood emit.

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CO₂

NO₂

SO₂

Cl₂

The diffusion of gases at absolute zero will be

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Unchanged

Zero

slightly decreases

Slightly increases

The rate of reaction

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Increases

Decreases

Remains the same

May decrease of increase

The shielding effect of the inner electrons is responsible for

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Increasing ionization energy values

Decreasing ionization energy values

Increasing electron affinity

Increasing electonegativity

A single lead cell provides volts

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2

4

6

8

The S.I. units for the molar heat capacity are

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Joule Cm^-3degree^-1

Joule deg^-1atm^-1

Joule deg^-1mol^-1

Joule deg^-1kg^-1

The law of mass action was given by

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D.C. down and P wage

Gay Lussic and C.M

C.M Goldberg and P. Waage

Hendeson and Le Chateller's

Which of the following solutions has the highest boiling point

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5.85% solution of sodium chloride

18.0% solution of glucose

6.0% solution of urea

All have the same boiling points

A component having small value of K mostly remains in the.

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Stationary phase

Mobile phase

Chromatographic tank

Solvent

The molar volume of CO₂is maximum at

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STP (0°C and 1 atm)

127° C and 1 atm

0°C and 2 atm

273°C and 2 atm

Carbon atom in methane in hybridized.

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sp3

Sp2

Sp

dsp3

The cathodic reaction in the electrolysis of dil H2SO4, with pt electrode sis.

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Reduction

Oxidation

Both oxidation and reduction

Neither oxidation nor reduction

Which is the second most abundant element in the universe

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H

He

CO

C

Benzene can not undergo.

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Substitution reactions

Addition reactions

Oxidation reactions

Elimination reactions

What is Glacial acetic acid

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Pure acetic acid

95% acetic acid

a mixture of acetic acid and glycerol

Vinegar

Which of the following compounds will not give Iodoform test on treatment with I₂/ NaOH

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Acetaldehyde

Acetone

Butanone

3-Pentanone

-SH Functional group is called

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Cyano

Mercapto

Nitro

Carboxyl

Aluminium oxide is.

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Acidic oxide

Basic oxide

Amphoteric oxide

None of these

Iodine deficiency in diet is known to cause.

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Beri Beri

Goiter

Rickets

Night blindness

When methane reacts with Cl2 is commonly known as

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Mustard gas

Laughing gas

Phosgene gas

Bio gas

XeF6 n hydrolysis produces.

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XeOF2

XeOF3

XeOF4

XeF2

Formalin is

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10% solution of formaldehyde in water

20% solution of formaldehyde in water

40% solution of formaldehyde in water

60% solution of formaldehyde in water

Wohler synthesized first organic compound in laboratory from

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Heating cyanogen's

Cyanogen and ammonium chloride solution

Cyanogen and HNO2

Heating ammonium cyanate