General Science Chemistry MCQ-2

MatchColumn I with Column II .
Column I -Column II
A . Potassium Bromide 1 . Fertilizer
B . Potassium phynitrate 2 . Photogra
C . Potassium sulphate 3 . Bakery
D . Monopotassium tartarate 4 . Gun powder
Codes
ABCD

(A) 3 2 4 1
(B) 1 3 2 4
(C) 2 4 1 3
(D) 4 1 3 2

which of the following is a closed system?

(A) Jet engine
(B) area placed in steel kettle
(C) assure cooker
(D) Racket engine during propulsion

Consider the following statements
1 . Galvanic cell converts chemical energy into electrical energy.
2 . In a galvanic cell, the electron flow from anode to cathode through the external circuit.
3 . Galvanic cell converts metal from its elemental state to the combined state.
Which of the above is/are correct?

(A) Only 1
(B) Only 2
(C) 1 and 2
(D) 1, 2 and 3

Which one of the following is an element which never exhibits positive oxidation state in any of its compounds?

(A) Oxygen
(B) Chlorine
(C) Fluorine
(D) Carbon

Which of the following metals does not form amalgams?

(A) Zinc
(B) Copper
(C) Magnesium
(D) Iron

Which is used in storage batteries?

(A) Cu
(B) Lead
(C) Tin
(D) Zinc

Salts of which of the following elements provide colours to fireworks?

(A) Zinc and sulphur
(B) Potassium and mercury
(C) Strontium and barium
(D) ,Chromium and nickel

MatchColumn I with Column II .
Column I- Column II
A . Endothermic 1 . Variation of enthalpy of a reaction with temperature .
B . Exothermic 2 . A process or reaction which consumes heat .
C . Activation 3 . A process or reaction energy that releases heat .
D . Arrhenius 4 . The amount of equation energy which must be invested in a reaction to get it started .
Select the correct answer using the codes given below .
Codes
ABCD

(A) 2 3 4 1
(B) 3 4 1 2
(C) 4 1 2 3
(D) 1 2 3 4.

When an acid cell is charged, then

(A) voltage of cell increases
(B) resistance of cell increases
(C) electrolyte of cell dilutes
(D) None of the above

The ionization potential of nitrogen is

(A) same as that of oxygen
(B) less than that of oxygen
(C) greater than that of oxygen
(D) None of the above

Consider the following statements
1 . Bronze is an alloy of copper containing tin and Aluminium.
2 . White gold is an alloy of gold containing platinum and lead.
Which of the statement(s) given above is/are correct?

(A) Only 1
(B) Only 2
(C) Both 1 and 2
(D) Neither 1 nor 2

Match Column I with Column II .
Column I (Mineral)
A . Limestone
B . Copper
C . Bauxite
D . Manganese
Column II(Industries in which largely used)
Cement
Electrical goods
Manufacture of aero planes
Steel
Codes
ABCD

(A) 1 2 3 4
(B) 2 3 4 1
(C) 3 4 12
(D) 4 1 23

Consider the following statements

1 . Liquid sodium is employed as a coolant in nuclear reactors.
2 . Calcium carbonate is an ingredient of toothpaste.
3 . Bordeaux mixture consists of sodium sulphate and lime.
4 . Zinc amalgams are used as a dental filling.
Which of the above is correct?

(A) 1
(B) 2
(C) 3
(D) 4

In the pressure cooker, cooking is faster because the increase in vapour pressure

(A) increases the specific heat
(B) decreases the specific heat
(C) decreases the boiling point
(D) increases the boiling point

The advantage of using fuel cell in a motor car could be

(A) low initial cost
(B) emission less operation
(C) light weight
(D) freedom from refueling

Which of the following has maximum density?

(A) Chloroform
(B) Water
(C) Benzene
(D) Ice

Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?

(A) Aluminium
(B) Chromium
(C) Nickel
(D) Tungsten