IB SECURITY ASSISTANT/EXECUTIVE & MTS (GEN) GK/GA QUIZ

Question 1:

Mass number of the element is equal to the sum of ________.

electrons and protons

protons and neutrons

electrons and neutrons

electrons, protons and neutrons

Question 2:

Which of the following element has same valency as sodium?

Calcium

Potassium

Barium

Aluminium

Question 3:

What is the name of the compound having the formula $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$?

Acetic acid

Ethanol

Chloroform

Methane

Question 4:

What is the chemical symbol for arsenic?

$\mathrm{Ac}$

As

An

$\mathrm{Ar}$

Question 5:

Which of the following subatomic particle is discovered by J. Chadwick?

Proton

Electron

Neutron

Nucleus

Question 6:

What will be the valency of an atom if it contains 7 electrons and 7 neutrons?

3

2

1

0

Question 7:

According to Planck’s quantum theory, the energy (E ) of a quantum of radiation is

Directly proportional to its frequency

Directly proportional to its wavelength

Inversely proportional to its frequency

Inversely proportional to its wavelength

Question 8:

What is the relation between molecular weight and vapour density?

Molecular weight = 2 X Vapour density

Molecular weight = 4 X Vapour density

Molecular weight = Vapour density/2

Question 9:

What is the relation between equivalent and molecular weight?

Equivalent weight = $\frac{2\times \text{molecular weight}}{n-factor}$

Equivalent weight = molecular weight$\times$ n –factor

Equivalent weight = $\frac{\text{molecular weight}}{n-factor}$

Equivalent weight = $\frac{n-factor}{\text{molecular weight}}$

Question 10:

The equivalent weight of aluminium hydroxide is

42 g/mol

50 g/mol

26 g/mol

69 g/mol