Question # 1

To cook the food at a high mountain is difficult as compared to at sea level. The reason is that:

Choose an answer

the temperature at the top of the mountain is low

the density of water decreases at the mountains

the boiling point of water decreases at the mountain

the hydrogen bonding in water changes with the change of height

Octet rule is not allowed in the formation of

Choose an answer

NF3

B.CF4

CCI4

PCI5

What will be the pH of 1.0 mol dm-3 of NH4OH, which is 1% dissociated

Choose an answer

2

12

0

2.7

The solubility of Fe(OH)3 is 'x' mole per dm3. Its Ksp would be

Choose an answer

9X3

3X4

27X4

9X4

Which of the following are responsible for the colour developed in transition elements compounds?

Choose an answer

s-orbitals

p-orbitals

d-orbitals

f-orbitals

For a particular halogen, the reactivity of alkyl halides

Choose an answer

remains same with C-increase

decreases with C-increase

increases with C-increase

decreases with C-decrease

Lithosphere has amount of silicon:

Choose an answer

35.30%

27.72%

40.01%

21.13%

2-propanol on oxidation yield

Choose an answer

Propionaldehyde

Propanone

Propanal

Butanal

The main pollution of leather tanneries in the waste is due to the salt of

Choose an answer

Chromium

Copper

Chromium

Lead

If the volume of 2 moles of an ideal gas at 540 K is 44.8 litre then its pressure will be

Choose an answer

1 atmosphere

2 atmosphere

3 atmosphere

4 atmosphere

The molecules of CO2, in dry ice form the

Choose an answer

covalent crystals

molecular crystals

none of these crystals

ionic crystals

Which of the following groups will increase the acidity of phenol?

Choose an answer

-NO₂

-CN

-X (halogens)

All

A pseudo uni-molecular reaction has order of reaction :

Choose an answer

3

2

1

0

Coordination number of Pt in [Pt Cl(NO₂) (NH₃)]^2-is

Choose an answer

2-

4

1

6

Propyne on hydrolysis in presence of H₂SO₄and HgSO₄gives

Choose an answer

Acetaldehyde

Acetone

Formaldehyde

None

Given data

(i) heat of formation of CO₂is -393.7 KJ mole^-1

(ii) heat of formation of H₂O is -285.8 KH mole^-1

(iii) heat of combustion of CH_{4 is -890.00 KJ mole}^-1

Enthalpy of formation of methane from C and H₂is calculated by Hess's law by

Choose an answer

Adding i + ii + iii

Adding 2(i) and ii and subtracting iii

adding i + iii and subtracting ii

Adding i + 2(ii) and subtracting iii

The simplest separating unit of a polymer is called:

Choose an answer

Monomer

Dimer

Trimmer

Macromer

The tip of the funnel should touch the side of the beaker in order to avoid :

Choose an answer

Splashing.

Leakage.

Mixing.

Contamination.

Aldelydes are the oxidation product of

Choose an answer

P-alcohols

s-alcohols

ter-alcohols

carboxylic acids

The strongest acid among the following aromatic compound is

Choose an answer

Ortho-nitrophenol

Para-chlorophenol

Para-nitrophenol

Meta-nitrophenol

Which of the following species has unpaired electrons in ant-bonding molecular orbitals?

Choose an answer

O2⁺²

N2^-2

B₂

F₂

The quantum number which describe the orientation of the orbitals is

Choose an answer

Spin quantum number

Principle quantum number

Azimathal quantum number

Magnetic quantum number

More Classes

Other Links

Chemistry General Science Test Medium Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer