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 colour is imparted by sodium

Question # 2

Chemical composition of colemnite is:

Question # 3

Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because

Question # 4

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

Question # 5

Which is used in navigational equipments?

Question # 6

Which of the following sulphates is not soluble in water

Question # 7

Hypo is used in photography for

Question # 8

Which of the following is the hardest metal among following

Question # 9

Phosphine is not obtained by the reaction when

Question # 10

When sulphur is boiled with Na2SO3solution, the compound formed is

Question # 11

Which metal of Group-II A of the periodic Table, will form the least ionic chloride

Question # 12

Which will have the maximum value of heat of hydration

Question # 13

Which of the following compounds is explosive in nature?

Question # 14

Calcium carbide reacts with water to produce

Question # 15

Which one of the following pentafluorides cannot be formed?

Question # 16

The acid which has a peroxy linkage is

Question # 17

Which of the following is formed by the action of water on sodium peroxide?

Question # 18

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

Question # 19

What causes nitrogen to be chemically inert?

Question # 20

______ reacts with alkalis to give hydrogen

Question # 21

Orthophosphoric acid is

Question # 22

Alkaline earth metals are usually

Question # 23

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

Question # 24

When SO2is passed through acidified K2Cr2O7solution

Question # 25

______ gives peroxide

Question # 26

Which has soapy touch?

Question # 27

Phosphorus pentoxide finds use as

Question # 28

Density of aluminium is (g cm-3):

Question # 29

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 # 30

Which is an essential constituent of chlorophyll

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 ______ is called milk of magnesia
A. NaOH
B. KOH
C. LiOH
D. None
2 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
3 Heavy water is obtained by
A. Prolonged electrolysis of water
B. Dissolving heavy salt in water
C. Simple distillation of water
D. Removing impurities of calcium and magnesium form water
4 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
5 Which one of the following properties is not correct for ozone?
A. It oxidizes lead sulphides
B. It oxidizes potassium iodide
C. It oxidizes mercury
D. It cannot act as a bleaching agent
6 Gypsum is a common mineral of
A. Magnesium
B. Strontium
C. Calcium
D. Barium
7 Tincal is a mineral of:
A. Al
B. B
C. Si
D. C
8 Which of the following fluorides does not exists?
A. NF5
B. PF5
C. AsF5
D. SbF5
9 Which salt is used for the treatment of hyperacidity in stomach
A. NaCl
B. KCl
C. NaHCO3
D. Na2CO3
10 As a fixing agent in photography, sodium thisoulphate is used for
A. Dissolving out unreacted silver bromide
B. Converting silver
C. Reducing solubility of AgBr
D. Preventing overdeveloping and fogging

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