Question # 1

Kerosene is liquid at room temperature.This is due to:

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organic nature

H-bonding

molecular size

dipole-dipole forces

In esterification, the OH of carboxylic acid is replaced by

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OR+

R+

OR

R

The best concentration unit used for K⁺ ions present in potable water is

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ppm

Mole fraction

Molarity

Molality

The deviation of a real gas from ideal behaviour is maximum at

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-10.0°C and 50 atm

-10°C and 2 atm

100°C and 2.0 atm

0°C and 2 atm

The most suitable temperature for preparing ammonia gas is

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250℃

450℃

350℃

550℃

When the concentration of product is increased the instantaneous rate of reaction with reference to reactants will be

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Positive

Negative

the same

falling curve

which chlorine compound has bonding that can be described as ionic with some convalent character?

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NaCI

MgCI₂

AICI₃

SiCI₄

Absolute zero, the lowest temperature on kelvin scale lies at

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-273°C

273°

-100°C

100°C

Which of the following carbohydrates is used in silvering of mirrors

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Sucrose

Cellulose

Fructose

Glucose

Which of the following is a base according to lowery Bronsted concept?

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I-1

HCl

H3O+

NH4+1

Which is not true in case of an ideal gas?

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It cannot be converted into a liquid

There is no interaction between the molecules

All molecules of the gas move with same speed

At a given temperature P'V is proportional to the amount of the gas

Which of the following order is incorrect w.r.t property indicated?

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Formic acid > Acetic acid > Propionic acid (ACID STRENGTH)

Cyclohexanol < Phenol < Benzoic acid ( ACID STRENGTH)

Benzamide < Aniline < Cyclohexylamine ( ACID STRENGTH)

FCH₂COOH > CICH₂COOH > BrCH₂COOH (ACID STRENGTH)

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

For which system does the equilibrium constant. K_chas units of

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What is the structure of the ester formed from propanoic acid and ethanol

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Number of elements in the first period of the periodic table are

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Two

Four

One

Eight

Among the alkaline earth metals the element forming predominantly covalent compounds is

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Be

Mg

Sr

calcium

Which of the following is not present in nucleotide?

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Guanine

Cytosine

Adenine

Tryoxine

Acetamide is prepared by:

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Heating ammonium acetate

Heating methyl cyanide

Heating ethyl acetate

The hydrolysis of methyl cyanide

Which of the following gives iodoform on heating with a solution of I₂containing Na₂CO₃?

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Ethyl alcohol

Acetone

Ethyl alcohol as well as acetone

Methyl alcohol

The colour of transition metal complexes is due to:

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d-d transitions of electorns

Paramagnetic nature of transition

Ionization

Loss of s-electrons

For the above reaction the relationship b/w k_c and k_p will be :

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K_p = K_cRT

Kp = K_c(RT)_-1

K_p = K_c(RT)_-2

K_c = K_p

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