Question # 1

Buckyballs also knowns as.

Choose an answer

Fullerenes

Graphite

Both a and b

None of these

Hydrogen and Helium follow.

Choose an answer

Octet rule

Triple rule

Duplet rule

None of these

Diamond is...................

Choose an answer

conductor

non -conductor

both a and b

None of these

The crystals of whic substance has rhombic shape?

Choose an answer

Brass

Bronze

Sulphur

Grahite

Rutherford used a gold foil in his experiment, which had a tickness of

Choose an answer

0,0002 cm

0,0001 cm

0.001 cm

0.00004cm

In whcih state of matter does not hae definite shape and volume.

Choose an answer

Liquid

Gas

Solid

All of these

Elements with atomic no .58 to 71 are called.

Choose an answer

Actinides

Lanthanides

Both a and b

None of these

Hydrogen bound ing is always found in

Choose an answer

Non-polar molecules

Homoatomic molecules

Polar Molecules

All of the above

When we mvoe form left to right in a period, atomic size.

Choose an answer

Increases

Decreases

First increases then decreased

None of the above

Which is used to manufacture soap?

Choose an answer

NH4OH

Ca(OH)2

NaOH

Mg(OH)2

The forward reaction takes place from

Choose an answer

Right to left

Left to right

Both a and b

None of these

Concentration is a separating technique in which mineral is separated from.

Choose an answer

Gangue

Silicates

Aluminates

All

Temporary hardness is due to the presence of bicarbonates of.

Choose an answer

Calcium

Magnsium

Both of them

None of them

Plants produces by the photosynthesis process.

Choose an answer

Glucose

Fructose

Sucrose

Maltose

A group of gases that maintains temperature of atmosphere is.

Choose an answer

Carbon dioxide and water vapours

Nitrogen and carbon dioxide

Thermosphere

Troposphere

Which disease is caused by polluted water.

Choose an answer

Cholera

Typhoid

Diarrhea

All of them

Which helps in lowering of cholesterol level?

Choose an answer

Vitamin

Fiber

Carbohydratres

All of them

Hypoglycemia result due to:

Choose an answer

high cholesterol level

low cholesterol level

low sugar level in body

high sugar level in body

Grease stains from clothes are removed by sing.

Choose an answer

Ammonium nitrate

Aluminium hydroxide

Ammonium hydroxide

Aluminum chloride

A reverse reaction is that.

Choose an answer

Which proceed from left to high

In which reactants reacts to form products

Which slow down gradually

Which speed up gradually

Carbon black is used in the manufacture of.

Choose an answer

Dry cleaning

Shoe polishes.

Fertilizer

None of these

Which one of the following species is not amphoteric?

Choose an answer

H₂O

NH₃

HCO₃

SO₄

If fluted fitter paper, rate of filtration increases as compared tot he cone shaped filter paper because.

Choose an answer

It has greater number of holes in it.

It has greater surface are of filtration

Fluted filter paper has greater pore sizes than cone shaped filter paper.

Thickness of paper is more than cone shaped filter paper

Which has greater enthalpy of vaporization

Choose an answer

F2

Cl2

Br2

I2

Depression of freezing point method is used for determination of molar masses of

Choose an answer

Electrolytes

Non-volatile solids

Volatile solids

Volatile liquids

Which of the following molecule obey octet rule.

Choose an answer

BF3

BCl3

NH2

SF6

What is the mass of aluminium is 204 g of the aluminum oxide Al2O3.

Choose an answer

26 g

27 g

54 g

108 g

Which of the hydrogen halides has the highest percentage of ionic character

Choose an answer

HF

HBr

HCI

HI

The deviation of a gas from ideal behavior is maximum at.

Choose an answer

-10 ^oC and 5.0 atm

-10^oC and 2 atm

0^oC and 2 atm

100^oC and 2 atm

Butter is solution of

Choose an answer

Liquid in liquid

Solid and liquid

Liquid and solid

Liquid and gas

The molar volume of CO2 is maximum at.

Choose an answer

STP

127 ^oC and 1 atm

0 ^oC and 2 atm

273 ^oC and 2 atm

What has a mass equal to that of one mole of water.

Choose an answer

22.4 dm3 of water

One mole of steam

One molecule of water

Two moles of hydrogen molecules and one mole of oxygen molecules.

When liquid water changes to ice its volume expands. The expansion in volume is.

Choose an answer

5%

9%

10%

18%

Bleaching powder may be produced by passing chlorine over

Choose an answer

calcium carbonate

hydrated calcium sulphate

calcium hydroxide

magnesium hydroxide

Systematic name of phthalic acid is

Choose an answer

Benzenedicarboxylic acid

Benzene doioc acid

1,2 benzenedicarboxylic acid

o, carboxylic benzoic acid

One of following is argillaceous material

Choose an answer

Marble

Clay

Lime

Marine Shell

When ethyl bromide is heated with Ag2O the product formed is.

Choose an answer

Ethanol

Ethene

Ethanol

Di ethyl ether

In which compound, oxidation state of sulphur is +6

Choose an answer

H2S

H2SO4

H2SO3

SO3

Sulphuric acid acts as dehydrating agent in its reaction with.

Choose an answer

Sodium chloride

Potassium nitrate

Copper

Ethyl alcohol

Which compound shows maximum hydrogen bonding with water

Choose an answer

CH₃OH

C₂H₅OH

CH₃- O - CH₃

C₆H₅OH

The reaction between fat and NaOH is

Choose an answer

Estrification

Hydrogenolysis

Fermentation

Saponification

The oxide of beryllium is

Choose an answer

Acidic

Basic

Amphoteric

None of these

Hydrogen resembles in properties with

Choose an answer

IA, IV A and VII A elements

III A, IV A and V A elements

II A, IV A and VI A elements

II A, III A and VII A elements

Group VI B to transition elements contains

Choose an answer

Zn, Cd, Hg

Fe, Ru, OS

Cr, MO, W

Mn, Te, Re