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Chemistry General Knowledge Objective Questions and Answers :-

#   What is the formula for Ethanol?
(a) CHCl3
(b) CH3OH
(c) C2H5OH
(d) CH4OH
Answer: (c) C2H5OH

 
#   What is the value of X in the reaction below?
Na2CO3+2HCl-‘X’+Co2+H2O
(a)NaCl
(b) 3NaCl
(c) 2NaCl
(d) None of these
Answer: (c) 2NaCl


#   What is the purest form of iron?
(a) Cast Iron
(b) Wrought Iron
(c) Steel
(d) None
Answer: (b) Wrought Iron


#   Chemical properties of an atom depends on which of the following?
(a)Valency
(b) Atomic Number
(c) Atomic Weight
(d) None of these
Answer: (b) Atomic Number


#   Which one of the following is used as a fuel?
(a) CO2
(b) C4H10
(c) CH3COOH
(d) None of these
Answer: (b) C4H10