Which of the following equations represents a substitution reaction?
C 2H10(g) + CI 2(g) → C4H9 CI(g) + HCI(g)
C 2H4(g) + HCI (g) → C 2H5 CI(l)
C2H2(g) + 2H 2(g) → C 2H6(g)
C 3H4(g) + 402(g) → 3CO2(g) + 2H 2O(g)
Correct answer is A
No explanation has been provided for this answer.
The ammonium compound used in the manufacture of dry cells is
NH4NO3
(NH4)SO4
NHCI4
(NH4)2CO3
Correct answer is C
No explanation has been provided for this answer.
Which of the following substance is an ore of iron?
Bauxite
Cassiterite
Haematite
Steel
Correct answer is C
No explanation has been provided for this answer.
Greenhouse effect can be reduced by controlling
water evaporation
burning wood and fossil fuel
the use of aerosols
the use of artificial fertilizers
Correct answer is B
No explanation has been provided for this answer.
What is CaHb in the following equation? C a
H b + 5O2 → 3CO 2 + 4H2O
C 3H4
C3H6
C3H8
C 5H 10
Correct answer is C
No explanation has been provided for this answer.