Question # 1

Which of the following statements is not correct about galvanic cell?

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Anode is negatively charged

Cathode is positively charged

Reduction occurs at anode

Reduction occurs at cathode

The reaction which is zero order

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Decomposition ofN2O5

Formation of Glucose in plant

Formation of Fel2

Chorination of methane in sunlight

To become a carbohydrate a compound must contain

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2-carbon

3-carbon

4-carbon

5-carbon

Soaps are basically salts of

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Glycerol

Triglyceride

Fatty acid

Fat

Elements of II-A group are called alkaline earth metals due to the reason that

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they occur in earth only

they form divalent cations only

they have ns2 electronic configuration

their oxides and hydroxides are alkaline in nature and metals are present in earth crust

Ozone layer is present in

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Troposphere

Stratosphere

Mesosphere

Ionosphere

Monomer for acrylic resins is

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Acrylic acid

Methylmethacrylate

Acryloritrile

All

Aniline is the derivative of the benzene containing the

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Hydroxyl group

Amino group

Amido group

Imido group

The temperature of a gas is directly proportional to its

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average translational kinetic energy

enthalpy

internal energy

hydration energy

Example of essential aromatic amino acids

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Theronine

Alanine

Phenyl alanine

Glycine

When liquid solute is dissolved in liquid solvent, then the best unit of concentration is?

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% W/W

% W/V

% V/V

%V/W

Which one of the following is not a nucleophile

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H₂O

H₂S

BF₃

NH₃

In which of these processes are smell organic molecules made into macromolecules?

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The cracking of petroleum fractions

The fractional distillation of crude oil

The polymerization of ethane

The hydrolysis of proteins

The percentage of H is the highest in

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CH₄

NH₃

H₂SO₄

C₆H₁₂O₆

The total number of orbitals in a shell with principal quantum number 'n' is

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2n

2n²

n²

n + 1

NO and NO₂gases in atmosphere are represented by

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NO

NO₄

NO_x

N_xO_y

Which of the following reactions is used for detecting presence of carbonyl group?

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Reaction with hydroxylamine

Reaction with hydrazine

Reaction with phenyl hydrazine

All

A colloidal gel is:

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3Ca, Al₂O₃

CaSO_2.2H₂O

3CaAl₂O₃.3CaSO₄.2H₂O

3Ca.Al₂O₃.6H₂O

The three N - Hσ-bonds are made by

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sp³- s overlap

sp²- s overlap

P - p overlap

sp - overlap

The polymers which can not be re-softened again and again are called

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Thermoplastic

Thermosetting

Both a and b

None

The test used for the detection of ethanol in the mouth of a drunk driver is that the drunk driver is asked to blow air from mouth into a solution of K₂Cr₂O₇and H₂SO₄. The colour changes, if the driver is drunk

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From orange to green

From pink to green

From orange to colorless

From pink to colorless

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+712 KJ mol^-1

+492 KJ mol^-1

-932 KJ mol^-1

-960 KJ mol^-1

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