Question # 1

At ordinary temperature, the most nearly ideal gases are

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N₂

He

H₂

all these

Wt. of 112 ml of oxygen at NTP on liquifaction would be

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0.32 g

0.64 g

0.16 g

0.96 g

SO₂and NO₂cause pollution due to increase in

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Buffer action

Basicity

Acidity

Neutrality

What is the weight of 10 dm³of CO₂at 27°C and 2 atm?

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89.3 g

56.1 g

125 g

127 g

Ozone is a gas having boiling point

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Unstable

High

Low

Moderate

Which one of the following is an organic compound?

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Calcium carbide

Calcium cyanide

Carbon disulphide

None of these

The average bond energy of C-Br is

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228 kJmol-1

250 kJmol-1

200 kJmol-1

290 kJmol-1

Moles of protons in 20g of SO3

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10

20

40

80

The relationship between density and molar mass of a gas is

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Directly proportional

^{Inversly proportional}

Straight line

Stoichiometric

Equal masses of methane and oxygen are mixed in an empty container at 25°C The fraction of total pressure exerted by oxygen is

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1/3

1/9

8/9

16/17

Methyl butyrate has an smell of:

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apple

pine apple

banana

winter green

Which one of the following properties is not correct for ozone?

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It oxidizes lead sulphides

It oxidizes potassium iodide

It oxidizes mercury

It cannot act as a bleaching agent

Oxalic acid oxidizes to:

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CO

CO₂

Oxalates

None of these

Strong oxidizing agents have

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Greater positive value of standard reduction potential

Lesser positive value of standard

Greater negative value of standard

None of these

When aqueous NaCl is electrolyzed, which of the following ions get discharged at anode :

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H⁺

Na⁺

OH^-

Cl^-

Alcohols are named by replacing 'e' of alkane with:

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al

ene

ol

one

The value of SHE is cathode and anode is always taken to be

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One

Zero

Different

Same

Electrons arranged in orbitals according to the increasing order of their n + l values, this rule is named as

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Hund's rule

Heisenberg's principle

Paulit exclusion principle

Auf bau principle

Methanol and ethanol can be distinguished by

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Iodoform test

Iucas test

Dichromate/H₂SO₄oxidation test

Flame test

Which gas is produced by treating CaC₂with water

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Methane

Ethane

Acetylene

HCI

Preparation of vegetable ghee involves:

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Halogenation

Hydrogenation

Hydroxylation

Dehydrogenation

For which mechanisms, the first step involved is the same:

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E₁ and E₂

E₂and SN₂

E₂ and E₁

E1 and SN₁

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