Q.1) Basic principle of the hydrogen bomb is
a)radio activity
b) chain reaction
*c)nuclear fusion
d) nuclear fission
Q.2) The charge on a proton is
a)1.6 X 109 C
b) 1.6 X 1019 C
c)16 X 1019 C
*d)1.6 X 10-19 C
Q.3) The two isotopes of chlorine are 17Cl37 both of them contain
a)the same number of electrons
b)the same number of protons
c)different number of neutrons
*d)all of these
Q.4) The meta l which is found in liquid state at room temperature is
a)Potassium
b) Copper
c)Iodine
*d) Mercury
Q.5) The major constituent of Super-phosphate of lime is
a)Nitrogen
*b) Phosphorous
c)Sulphur
d) Hydrogen
Q.6) Electrovalent bond is formed between
a)two electropositive elements
*b)two electronegative elements
c)two atoms of the same element
d)electropositive and electronegative elements
Q.7) Of the following substances the one whichcan turn blue litmus paper to red is
a)CH3CHO
b) C12H22O11
*c)CH3COOH
d)C2H5OH
Q.8) The elements having only proton in the nucleus is
*a)Hydrogen
b) Deuterium
c)Tritium
d) Helium
Q.9) pH of water is
a) 4
*b) 7
c) 12
d)0
Q.10) The sides of a match box contains
*a)red phosphorus
b) white phosphorus
c)phosphorus pentoxide
d)none of these
No comments:
Post a Comment