Question # 1

Which of the following is pure substance

Choose an answer

Distilled water

, Sea water

, NaCl (aq)

Brass

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

Choose an answer

% W/W

% W/V

% V/V

%V/W

The molarity of 2% W/V NaOH solution is

Choose an answer

2

0.25

0.05

0.5

Gram atoms of hydrogen in 5.5 g H2

Choose an answer

5.50

2.25

5.45

2.20

Point out that which is not an application of liquid crystals?

Choose an answer

Source of energy

In display of electrical devices

For skin thermography

As temperature sensor

1 gram molecule refers to amount in grams

Choose an answer

Equivalent to 1 mole of an atom

Equivalent to 1 mole of a molecule

Equivalent to 1 mole of an ionic species

Of an ionic compound

Moles of protons in 20g of SO3

Choose an answer

10

20

40

80

The height of the peak in the mass spectrum shows

Choose an answer

Number of isotopes

Relative abundance

Mass number

Number of protons

In s solution 7.8 g of benzene ( C6H6 ) and 46g of toluene (C6H5CH3) is present. The mole fraction of toluene is

Choose an answer

1/3

1/5

2/3

5/6

The sole produets of combustion analysis are

Choose an answer

CO2 and NH3

H2O and Mg(CIO4)2

CO2 and KOH

CO2 and H2O

More Classes

Other Links

MDCAT Chemistry Chapter 2 Atomic Structure Online Test 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