1.Which of the following phenomenon is considered responsible for Global Warming?
A.
Greenhouse effect
B.
Fire in coal mines
C.
Dry farming
D.
Monsoon
E.
Trade winds
2.The nucleus of an atom consists of
A.
electrons and neutrons
B.
electrons and protons
C.
protons and neutrons
D.
All of the above
3.The number of moles of solute present in 1 kg of a solvent is called its
A.
molality
B.
molarity
C.
normality
D.
formality
4.The most electronegative element among the following is
A.
sodium
B.
bromine
C.
fluorine
D.
oxygen
5.The metal used to recover copper from a solution of copper sulphate is
A.
Na
B.
Ag
C.
Hg
D.
Fe
SOLUTIONS
1.A
2.C
3.A
4.C
5.D
A.
Greenhouse effect
B.
Fire in coal mines
C.
Dry farming
D.
Monsoon
E.
Trade winds
2.The nucleus of an atom consists of
A.
electrons and neutrons
B.
electrons and protons
C.
protons and neutrons
D.
All of the above
3.The number of moles of solute present in 1 kg of a solvent is called its
A.
molality
B.
molarity
C.
normality
D.
formality
4.The most electronegative element among the following is
A.
sodium
B.
bromine
C.
fluorine
D.
oxygen
5.The metal used to recover copper from a solution of copper sulphate is
A.
Na
B.
Ag
C.
Hg
D.
Fe
SOLUTIONS
1.A
2.C
3.A
4.C
5.D