UKSSSC Forest SI Exam Paper 19 July 2021 (1st Shift) Official Answer Key

81. What is the major constituent of Bio Gas?
(A) Carbon Dioxide
(B) Methane
(C) Oxygen
(D) Nitrogen

82. Who does GAP stands for in terms of Ganga river?
(A) Ganga assimilation plan
(B) Ganga and Associated Rivers planning
(C) Ganga Action Plan
(D) Ganga Assistance Plan

83. Le-Chatelier’s principle is applicable only to ______.
(A) System is in equilibrium
(B) Heterogeneous reaction
(C) System is not in equilibrium
(D) Homogeneous reaction

84. What is the position of image formed by a concave mirror if the position of the object is at focus F?
(A) At the Focus F
(B) Behind the mirror
(C) At infinity
(D) Between Focus F and Centre of Curvature C

85. In an endothermic reaction, energy of products of the reaction is ________ total energy of reactants.
(A) Lesser than
(B) Greater than
(C) Equal to
(D) Negligible compared to

86. Olfactory indicators are _______.
(A) Turmeric
(B) Clove
(C) Soap
(D) Rose Petals

87. Which of the following is magnetite?
(A) CaCO₃
(B) Fe₃O₄
(C) MnO
(D) H₂SO₄

88. What is the position of object from a convex mirror such that the position of the image is at the focus F, behind the mirror?
(A) Between Focus F and Centre of Curvature C
(B) At the Focus F
(C) At infinity
(D) At Centre of Curvature C

89. The process by which humus is broken down to inorganic nutrients by microbes is called _____.
(A) Pyrolysis
(B) Saponification
(C) Mineralisation
(D) Humification

90. What is the alternative name of water cycle?
(A) Hydro-Molecular Cycle
(B) Hydrological Cycle
(C) Hydrogen cycle
(D) Hydro-oxide Cycle

91. The escape velocity of the moon is calculated as ________.
(A) 2.3 km/s
(B) 4.2 km/s
(C) 5.2 km/s
(D) 3.2 km/s

92. The solids with conductivities ranging between 10^-6 to 10⁴ ohm^-1m^-1 are called _______.
(A) Insulators
(B) Semiconductors
(C) Non-Conductors
(D) Conductors

93. Focus, where the earthquake originates, is also called ____.
(A) Hypocentre
(B) Centre
(C) Perimeter
(D) Epicentre

94. What are the 3-R’s that help to conserve natural resources?
(A) Reduce, ration, Recycle
(B) Reuse, reduce, recycle
(C) Reduce, ration, regenerate
(D) Reuse, redistribute, recycle

95. Where is the Panna Biosphere Reserve located?
(A) Tripura
(B) Assam
(C) Uttarakand
(D) Madhya Pradesh

96. How many valence electrons are present in aluminium?
(A) 3
(B) 5
(C) 4
(D) 1

97. What would be the resistance of a wire of a material having length (l/2) and area of cross section 2A if another wire of same material has length l and area of cross section A with a resistance of 4 ohm?
(A) 1 ohm
(B) 8 ohm
(C) 2 ohm
(D) 4 ohm

98. Which of the following is an indigenous cow breed of India?
(A) Guernsey
(B) Ayrshire
(C) Holstein Friesian
(D) Hallikar

99. Which type of ecological pyramid always shows upright?
(A) Dry Weight pyramid
(B) Biomass pyramid
(C) Number of species pyramid
(D) Energy pyramid

100. Silicon doped with the group 15 elements of modern periodic table forms ________.
(A) Conductor
(B) Insulator
(C) n-type semiconductor
(D) p-type semiconductor