General Knowledge - Chemistry

Exercise :: Chemistry - Section 1

  • Chemistry - Section 1
55. 

The metal does not give H2 on treatment with dilute HCL is

A. Zn
B. Fe
C. Ag
D. Ca

Answer: Option C

Explanation:

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56. 

The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

A. 1 gram of molecule
B. 0.5 gram of molecule
C. 5 gram of molecule
D. 10 gram of molecule

Answer: Option C

Explanation:

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57. 

The most extensive, commercially useful source of thorium as monazite sand occurs in India at

A. Orissa coast
B. Travancore coast
C. West Bengal coast
D. Gujarat coast

Answer: Option B

Explanation:

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58. 

The main active constituent of tea and coffee is

A. nicotine
B. chlorophyll
C. caffeine
D. aspirin

Answer: Option C

Explanation:

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59. 

The maximum number of isomers for an alkene with molecular formula C4H8 is

A. 5
B. 4
C. 2
D. 3

Answer: Option B

Explanation:

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60. 

The hardest form of carbon is

A. coke
B. graphite
C. diamond
D. charcoal

Answer: Option C

Explanation:

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