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Online General Science Quiz Set No - 9

General Science questions have been taken from previous years question papers of different competitive examinations such SSC CGL, SSC CHSL, CDS, NDA, Bank, State PSC, Railways, MAT, CAT, etc.

81) Damping off of seedlings is caused by
A) Peronospola parasitica
B) Albugo Candida
C) Phytophthora infestants
D) Phythium debaryanum

82) Dead organs are generally stored in formalin. Formalin is?
A) aqueous formaldehyde
B) aqueous formic acid
C) aqueous ferric alum
D) aqueous ferrous sulphate

83) Decibel unit is used to measure?
A) Sound intensity
B) Light intensity
C) Magnitude of Earthquake
D) None of these

84) Deep blue colour is imparted to glass by the presence of:
A) Iron oxide
B) Cupric oxide
C) Nickel oxide
D) Cobalt oxide

85) Deficiency of which vitamin leads to 'Rickets' (softening of bones) ?
A) Vitamin D
B) Vitamin A
C) Vitamin C
D) Vitamin B

86) Diamond is harder than graphite because of:
A) Difference of layers of atoms
B) Tetrahedral structure of diamonds
C) Difference of crystaline structures
D) None of these

87) Dry ice is:
A) Ice which never melts
B) A term used for insensitive persons
C) Solid carbon dioxide
D) Frozen heavy water

88) Due to its ability to dissolve glass, which acid is not kept in glass container ?
A) Hydrofluoric Acid
B) Hydrochloric Acid
C) Sulphuric Acid
D) Nitric Acid

89) During burnings of fuels, carbon and hydrogen present in the fuels are:
A) Converted into carbon dioxide and water vapour
B) Released into the atmosphere
C) Absorbed by the surroundings
D) Converted into alkanes

90) Edward Jenner is associated with
A) Cholera
B) Typhoid
C) Small Pox
D) Paralysis

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