ECAT Pre Engineering Chemistry Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

Try The MCQ's Test For ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

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ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

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Question # 1

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?

Question # 2

Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

Question # 3

Which of the following has highest dipole moment?

Question # 4

Hybridized in oxygen is:

Question # 5

Which of the following is the hardest metal among following

Question # 6

The most acidic of the following compounds is

Question # 7

Commercial common salt becomes slight damp on storing because

Question # 8

Sodium hexametaphophate is known as

Question # 9

The number of unpaired electrons in the p-subshell of oxygen atom

Question # 10

Which is not the form of silica?

Question # 11

Potassium superoxide has a use in breathing equipment in space crafts. The balanced equation for the reaction is

Question # 12

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Question # 13

The number of electron that are paired in oxygen molecule are

Question # 14

Which is an essential constituent of chlorophyll

Question # 15

Ozone is not

Question # 16

The chemical formula of Epson salt is

Question # 17

The silver bromide in hypo (Na2S2O3) solution is

Question # 18

Phosphorus pentoxide finds use as

Question # 19

What is the formula of asbestos?

Question # 20

The metal with highest electrical resistance at room temperature is

Question # 21

Which property is not present in Al?

Question # 22

Baking powder has which one of the following formula

Question # 23

Bond angle is minimum for

Question # 24

Gypsum is a common mineral of

Question # 25

Which has soapy touch?

Question # 26

Which of the following elements is most metallic?

Question # 27

Basicity of orthoposphoric acid is

Question # 28

Which will have the maximum value of heat of hydration

Question # 29

NaHCO3is prepared by

Question # 30

Which of the following are electropositive in nature

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 NaHCO3is commonly called
A. Soda ash
B. Baking soda
C. Washing soda
D. None of these
2 Phosphide ion has the electronic structure similar to that of
A. Nitride ion
B. Fluoride ion
C. Sodium ion
D. Chloride ion
3 Francium is an element at the bottom of Group I in the Periodic Table. Which one of the following predication is likely to be correct?
A. It will react with water to liberate oxygen
B. Its hydroxide will be a strong alkali in water
C. Its carbonate will decompose on heating to give carbon dioxide
D. Its nitrate on heating will give nitrogen dioxide and oxygen
4 Which of the following sulphates has the highest solubility in water
A. BaSO4
B. CaSO4
C. MgSO4
D. BeSO4
5 Sodium should be stored in
A. Air free from moisture
B. Air free form carbon dioxide
C. Under water
D. Under kerosene oil
6 Which salt is used for the treatment of hyperacidity in stomach
A. NaCl
B. KCl
C. NaHCO3
D. Na2CO3
7 Silicon atom is hybridized:
A. sp
B. sp2
C. sp3
D. dsp2
8 Which property is not present in Al?
A. Reacts with acid
B. Reacts with bases
C. Changes litmus paper
D. Changes methyle orange colour
9 In the earth crust sodium is
A. 2.50%
B. 2.30%
C. 2.40%
D. 3.50%
10 Which of the following phosphorus is most reactive?
A. Red phosphorus
B. White phosphorus
C. Scrlet phosphorus
D. Violet phosphorous

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