Chemistry Important Topics for Competitive Exams 2024-2025 - 2

Question: 6

Domestic cooking gas consists of mostly

(A) Hydrogen and acetylene

(B) Ethylene and carbon monoxide

(C) Liquified butane and isobutene

(D) Methane and ethane

Question: 7

Which of the following copper alloys is used for the manufacture of springs and suspension filaments in electrical instruments?

(A) Aluminium bronze

(B) Bronze

(C) German silver

(D) Phosphor bronze

Question: 8

The credit of construction of first nuclear reactor goes to

(A) Einstein

(B) Niels Bohr

(C) Fermi

(D) Oppenheimer

Question: 9

Hydrogen bomb is based on the principle of

(A) Controlled fission reaction

(B) Uncontrolled fission reaction

(C) Controlled fusion reaction

(D) Uncontrolled fusion reaction

Question: 10

The difference between a nuclear reactor and atomic bomb is that

(A) The chain reaction in nuclear reactor is not controlled

(B) No chain reaction takes place in atomic bomb while it takes place in nuclear reactor

(C) The chain reaction in nuclear reactor is controlled

(D) No chain reaction takes place in nuclear reactor while in the atomic bomb there is chain reaction