Question # 1

Which of the following is not the property of liquid crystal

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anisotropic

isotropic

three dimensional arrangement

fluidity

The B.P of H2O at Murree Hills is

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99.8C

98°C

100C°

89°C

The height of the peak in the mass spectrum shows

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Number of isotopes

Relative abundance

Mass number

Number of protons

Styrene has empirical formula CH, and there is 92.2%C and 7.75% hydrogen. If molar mass is 104g mol¯, what will be integral multiple (n) to get molecular formula:

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2

4

6

8

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

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% W/W

% W/V

% V/V

%V/W

One mole of SO2 contains

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6.022 x 10(23) atoms of oxygen

6.022x 10 ê23 atoms of sulfur

18.1x 10 (23) molecules of SO2

4 g molecule of SO2

Cholestryl benzoate tums into milky liquid at

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140°C

145°C

148C°

149°C

How many isotopes are present in palladium

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Two

Four

Six

nine

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

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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

The hydrocarbon with maximum B.P is

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CH4

C6H14

C4H10

C2H6

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MDCAT Chemistry Chapter 1 Introduction to fundamental concepts of chemistry Online Test MCQs With Answers

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