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

00:00
Question # 1

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

Question # 2

The element caesium bears resemblance with

Question # 3

NaHCO3is prepared by

Question # 4

Which on of the following compounds does not exist?

Question # 5

Which of the following phosphorus is most reactive?

Question # 6

______ is used in breathing equipments for mountaineers and in space craft

Question # 7

Which is used to remove air bubbles form metals?

Question # 8

What is chrome yellow?

Question # 9

Which of the following are electropositive in nature

Question # 10

Which shows maximum catenation property?

Question # 11

Gypsum is a common mineral of

Question # 12

Which one of the following elements occurs free in nature?

Question # 13

Calcium carbide reacts with water to produce

Question # 14

HNO2acts as an/a

Question # 15

Each of the following is true of white and red phosphours except that they

Question # 16

The metal with highest electrical resistance at room temperature is

Question # 17

Commercial common salt becomes slight damp on storing because

Question # 18

NaHCO3is commonly called

Question # 19

Red P can be obtained form white P by

Question # 20

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?

Question # 21

Silicon atom is hybridized:

Question # 22

The silver bromide in hypo (Na2S2O3) solution is

Question # 23

When ammonia is heated with cupric oxide, a molecule of ammonia will

Question # 24

All the elements of oxygen family are

Question # 25

Which of the following sulphates is not soluble in water

Question # 26

Which metal is used in the thermit process because of its activity?

Question # 27

Chemical composition of colemnite is:

Question # 28

Which is not the form of silica?

Question # 29

Borax is a common mineral of alkali metal sodium. Its formula is

Question # 30

LiOH ______ soluble than NaOH

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The ore CaSO42H2O has the general name
A. Gypsum
B. Dolomite
C. Calcite
D. Epsom salt
2 Which colour is imparted by sodium
A. Yellow
B. Violet
C. Red
D. Crimson
3 Lime, calcium oxide, is used in agriculture for
A. Adding ca metal in soil
B. Making soil acidic
C. Neutralizing acidic soil
D. Adding oxygen to soil
4 Which is not the form of silica?
A. Amethyst quatz
B. Rose quatz
C. Smoky
D. None of these
5 The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is
A. Hypophosphorus acid
B. Orthophosphorus acid
C. Pyrophosphorus acid
D. Metaphosphorus acid
6 Which is used to remove air bubbles form metals?
A. B
B. Be
C. Mg
D. Al
7 Borax is hydrated:
A. Penta
B. Deca
C. Hepta
D. Octa
8 In the earth crust sodium is
A. 2.50%
B. 2.30%
C. 2.40%
D. 3.50%
9 Hybridized in oxygen is:
A. sp
B. sp2
C. sp3
D. dsp3
10 The number of electron that are paired in oxygen molecule are
A. 16
B. 12
C. 14
D. 7

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