Question # 1

The actual number of atoms or molecules taking part in rate determining step is

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Rate of reaction

Velocity of reaction

Order of reaction

Molecularly

An oxidixing agent

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K₂Cr₂O₇

H₂SO₄

FeSO₄

K₂SO₄

The osmotic pressure of solution increases if

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Temperature is decreased

Solution constant is increased

Number of solute molecules are increased

Volume is increased

When aqueous solution of NaOH is electrolysed useing graphite electrodes, the product obtained at anode is

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O₂gas

H₂gas

Na metal

Na₂O

Reduction of alkyl halides give

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Alkanes

Alkenes

Ketones

Ether

To calculate volume of the solvent, we need to know, the :

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Density of solute

Normality of solute

Mass of solute

Molarity of solute

The forced which holds together two or more atoms or ions to form a large variety of compounds in called:

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A chemical bond.

An ionic bond.

A covalent bond.

A coordinate bond.

If we remove one hydrogen atom from an alkane we obtain a group called

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Acetyle group

Formyle group

Alkyle group

Ketyle group

Chemical equilibrium involving reactants and products in more than one phase is called

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Static

Dynamic

Homogeneous

Heterogeneous

Plastics are pollution problem because many plastics:

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Are made from petroleleum

Are very inflammable

Burn to produce toxic funes

Decompose to produce toxic products

Which is possible in ethers?

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Reactivity high

Oxidation and reduction

Reactivity towards bases

Towards acids

N-atom forms three covalent bonds, its electronic configuration is

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The molecule of ethane possess which hybrization

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sp³

sp²

sp

sp²d

Cyanohydrin of which of the following forms lactic acid

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HCHO

CH₃COCH₃

CH₃CHO

CH₃CH₂CH₂CHO

The heat of formation of graphite and P(white) is ______ KJ/mole

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0.00

-273.0

+8.7

813.99

3.01 x 10²²Ag⁺ions is present in

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85 grams AgNO₃

0.85 g AgNO₃

8.5 g AgNO₃

18.5 g AgNO₃

Reductive ozonolysis of benzene produces

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Acetone

Maleic anhydride

Phthalic acid

Glyoxal

Which statement is incorrect for NICAD battery

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The electrolyte is alkali

Cd acts as anode

MnO₂acts as electrolyte

NiO₂acts as cathode

Which one of the following will have the maximum dipole moment

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CH₃F

CH₃Cl

CH₃Br

CH₃l

The number of coulombs required for the deposition of 107.870 g of silver is

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96500

48250

193000

10000

Which quantum number is sufficient to describe the electron is hydrogen atom?

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l

n

m

s

Cannizzaro's reaction in not given by

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Formaldehyde

Acetaldehyde

Benzaldyhyde

Trimethylacetaldehyde

Generally the bond formed by metals with non-metals is

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Ionic

Covalent

Polar

Non- polar

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

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SO₂

NO₂

CO

A and b only

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

In the modern periodic table the elements are placed in the ascending order of their

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Atomic masses

Melting points

Boiling points

Atomic numbers

Photochemical smog is caused by

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CO

CO₂

O₃

NO₂

Tryosine was isolated from

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Butter

Cheese

Oils

Fats

Objects of the size of an atom can be observed in

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An electron microscope

An x-ray spectrum

Atomic absorption spectrum

A visible spectrum

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

The amount of heat evolved or absorbed in a chemical reaction indicated by balanced chemical equation at 25° and one atmospheric pressure is called

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Enthalpy of formation

Enthalpy of neutralization

Enthaply of combustion

Enthaply of reaction

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