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Online General Science Quiz Set No - 13

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.

121) If lime is added to soil, then?
A) Acidity of soil decreases
B) Acidity of soil increases
C) Salinity of soil decreases
D) Salinity of soil increases

122) If the current and the voltage are out of phase by 90 degree, then the power is?
A) Maximum
B) Minimum
C) Zero
D) None of these

123) If the earth stops rotating the apparent value of g on its surface will
A) increase everywhere
B) decrease everywhere
C) remain the same everywhere
D) increase at some places and remain the same at other places

124) If two liquids have widely different boiling points, they may be separated by:
A) Steam distillation
B) Decantation
C) Sublimation
D) Fractional distillation

125) In a human body, the longest bone is in the
A) Vertebral column
B) Thigh
C) Rib cage
D) Arm

126) In a nuclear reactor, one of the following is used as a fuel
A) Coal
B) Uranium
C) Radium
D) Diesel

127) In a railway track, two rails are joined end to end with a gap in between them because
A) steel can be saved
B) accidents due to contraction in winter can be avoided
C) air gaps are necessary for bearing the weight of running train
D) accidents due to expansion in summer can be avoided

128) In an atomic explosion enormous energy is released which is due to the:
A) Conversions of neutrons into protons
B) Conversion of chemical energy into nuclear energy
C) Conversion of mechanical energy into nuclear energy
D) Conversion of mass into energy

129) In an atomic nucleus, neutrons and protons are held together by:
A) Gravitational forces
B) Magnetic forces
C) Exchange forces
D) Coulombic forces

130) In eye donation, which one of the following parts of donor's eye is utilised?
A) Iris
B) Lens
C) Cornea
D) Retina