UKSSSC Forest SI Exam Paper 17 July 2021 (2nd Shift) Official Answer Key

81. What is the property of a body to not change its state of motion or of rest without an external force compelling it to change the state?
(A) Gravitation
(B) Inertia
(C) Dynamics
(D) Mechanics

82. Which of the following performs denitrifying function and returns nitrogen to atmosphere?
(A) Agrobacterium
(B) Ralstonia
(C) Pseudomonas
(D) Bifidobacterium

83. Who are the members of Joint Forest Management (JFM)?
(A) Forest departments and Statistics Department
(B) Forest departments and various other department associated to forests
(C) Forest departments and local communities
(D) Forest departments and Rural Development Council

84. Based on lattice energy and other considerations, which one of the following alkali metal chlorides is expected to have the highest melting point?
(A) KCl
(B) NaCl
(C) RbCl
(D) LiCl

85. Which of the following is the first multipurpose river valley project of the independent India?
(A) Hirakud Dam
(B) KRS Dam
(C) Bhakra Nangal
(D) Damodar Valley Project

86. What is the time taken for the decay of one half of the initial number of nuclei present in a radioactive sample known as?
(A) Decay constant
(B) Half life
(C) Mean life
(D) Mass time period

87. What is heroin chemically called?
(A) Chloroxylenol
(B) Hydromorphone
(C) Benzoylmethylecgonine
(D) Diacetylmorphine

88. What is the colour of insulation of live wire of the main electric power supply?
(A) Red
(B) Green
(C) Yellow
(D) Black

89. Where is Tahiti island related to Southern Oscillation located?
(A) Pacific Ocean
(B) Atlantic Ocean
(C) Arctic Ocean
(D) Indian Ocean

90. Which of the following Phylum includes asymmetrical organisms?
(A) Annelida
(B) Porifera
(C) Mollusca
(D) Arthropoda

91. Coal and petroleum were formed from degradation of______.
(A) Ice
(B) Biomass
(C) Rivers
(D) Rocks

92. Where does a magnetic compass needle point when allowed to rotate about a horizontal axis at the magnetic north pole point of the earth’s surface?
(A) The compass needle makes no significant movement
(B) The compass needle keeps rotating in clockwise direction
(C) The compass needle points downwards
(D) The compass needle points upwards

93. Who proposed the use and disuse theory?
(A) Lamarck
(B) Charles Darwin
(C) Frederick Winslow Taylor
(D) J.J Thomson

94. Work done by a force in the direction of displacement can be defined as the product of __________.
(A) Force and Displacement
(B) Force and Momentum
(C) Force and Weight
(D) Force and Mass

95. Two forces which are equal and opposite in direction are called _________.
(A) Contact Forces
(B) Unbalanced Forces
(C) Balanced Forces
(D) Tensor Forces

96. Who among the following formulated the cell theory?
(A) Schwann
(B) Robert Brown
(C) Carolus Linnaeus
(D) Robert Hooke

97. In case of gases, with increase in temperature, the viscosity _________.
(A) Becomes zero
(B) Increases
(C) Decreases
(D) Reduces to negative value

98. The magnitude of a central force depends on the __________.
(A) Distance of the point of application of the force from the fixed point
(B) Mass of the body experiencing the force
(C) Material of the body experiencing the force
(D) None of these factors

99. Which gas occupies around 78% of the Earth’s atmosphere?
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Methane

100. The slope of force – displacement graph gives the _______ of the body.
(A) Momentum
(B) Impulse
(C) Acceleration
(D) Force gradient

 

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