ECAT Pre Engineering Chemistry Chapter 14 MCQ Test With Answer

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

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

Question # 2

Dipole moment of CO molecule is:

Question # 3

Oleum is

Question # 4

Down's cell is used to prepare

Question # 5

The element which has a simple cubic lattice in solid state is

Question # 6

Chemical composition of colemnite is:

Question # 7

S-block elements consist of

Question # 8

Which one of the following properties is not correct for ozone?

Question # 9

The chemical formula of Trona is

Question # 10

As a fixing agent in photography, sodium thisoulphate is used for

Question # 11

NaHCO3is commonly called

Question # 12

Which colour is imparted by sodium

Question # 13

Which of the following statement is not related to Solvay's process of Na2CO3

Question # 14

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

Question # 15

Which of the following elements is most metallic?

Question # 16

Which carbonate of alkali metals is insoluble in water

Question # 17

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 # 18

Lithium reacts with air to form

Question # 19

White phosphorus is

Question # 20

NaHCO3is prepared by

Question # 21

Tincal is a mineral of:

Question # 22

The metal with highest electrical resistance at room temperature is

Question # 23

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

Question # 24

Which is used to remove air bubbles form metals?

Question # 25

The silver bromide in hypo (Na2S2O3) solution is

Question # 26

HNO2acts as an/a

Question # 27

Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M2O3become

Question # 28

The alkali metals form

Question # 29

Ozone is not

Question # 30

In a group IIA from top to bottom as the atomic number increases, there is regular decreases in

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The chemical formula of gypsum is
A. CaSO4. 5H2O
B. CaSO4. 4H2O
C. CaSO4. 2H2O
D. None of these
2 The chemical formula of Epson salt is
A. MgSO4
B. MgCl2
C. MgSO4. 7H2O
D. MgCl2. 7H2O
3 A compound used as eye wash:
A. Borax
B. Boric acid
C. Metabolic acid
D. Pyroboric acid
4 Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen dioxide
D. Dinitrogen tetraoxide
5 The alkaline earth elements have in their s-orbital
A. One electron
B. Two electron
C. No electron
D. Three electron
6 Each of the following is true of white and red phosphours except that they
A. Are both soluble in CS2
B. Can be oxidized by heating in air
C. Consist of the same kind of atoms
D. Can be converted into one another
7 Baking powder has which one of the following formula
A. Na2CO3
B. Na2SO4
C. NaHCO3
D. K2CO3
8 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
9 Which of the following elements is most metallic?
A. P
B. As
C. Sb
D. Bi
10 Identify the incorrect statement with respect to ozone
A. Ozone is formed in the upper atmosphere by a photochemical reaction involving dioxygen
B. Ozone is more reactive than diaoxygen
C. Ozone is diamagnetic whereas dioxygen is paramagnetic
D. Ozone protects the earth's inhabitants by absorbing gamma-radiations

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