Options:
A. Indus
B. Damodar
C. Volga
D. Nile
Correct Answer: D. Nile

Options:
A. Indus
B. Damodar
C. Volga
D. Nile
Correct Answer: D. Nile

Options:
A. Tobacco
B. Mercury
C. Alcohol
D. Chromium
Correct Answer: B. Mercury

Options:
A. Sun
B. Pluto
C. Mars
D. Moon
Correct Answer: C. Mars

Options:
A. Extraction
B. Bleaching
C. Metallurgy
D. Allotropy
Correct Answer: B. Bleaching

Options:
A. Lead
B. Magnesium
C. Iron
D. Copper
Correct Answer: D. Copper

Options:
A. Cancer
B. Blisters
C. Mutation
D. Ozone
Correct Answer: D. Ozone

Options:
A. Ascetic
B. Veda
C. Recite
D. Book
Correct Answer: B. Veda

Options:
A. Aircraft
B. Corrosion
C. Electroplating
D. Filament
Correct Answer: C. Electroplating

Options:
A. Lubrication
B. Lethargy
C. Paralysis
D. Hermit
Correct Answer: C. Paralysis

Options:
A. Ridicule
B. Humour
C. Solemnity
D. Companion
Correct Answer: B. Humour
