BPSC 67th Prelims Answer Key 2022 | BPSC 67th Prelims Exam 2022 Answer Key

Q81. A clock is set right at 6 a.m. It gains 10 minutes in 24 hours. What will be the right time when the clock indicates 11 a.m. on the next day?
(A) 48 minutes past
(B) 50 minutes past 10
(C) 54 minutes past 10
(D) 10 a.m.
(E) None of the above/More than one of the above

Q82. At what time between 5 and 6 will the two hands of a watch coincide?
(A) 27 minutes past 5
(B) 27 3/11 minutes past 5
(C) 28 minutes past 5
(D) 26 minutes past 5
(E) None of the above/More than one of the above

Q83. Anil and Suman together can do work in 12 days, which Anil alone can do in 20 days. If Suman alone has to do this work, he will take
(A) 28 days
(B) 29 days
(C) 30 days
(D) 27 days
(E) None of the above/More than one of the above

Q84. In a class of 55 students, 34 like to play Cricket and 26 like to play Badminton. Also, each student likes to play at least one of the two games. How many students like to play both Cricket and Badminton?
(A) 4
(B) 5
(C) 6
(D) 3
(E) None of the above/More than one of the above

Q85. What are the two natural numbers whose product is 2400 and the sum of whose squares is 5200?
(A) 80, 30
(B) 75, 32
(C) 60, 40
(D) 120, 20
(E) None of the above/More than one of the above

Q86. How many numbers between 100 and 500 are divisible by 4, 5 and 6?
(A) 6
(B) 7
(C) 8
(D) 5
(E) None of the above/More than one of the above

Q87. In a mixture of 70 kg, the ratio of sand and cement is 4: 1. How much sand should be added to the mixture so that the ratio of sand and cement in it becomes 6:1?
(A) 28 kg
(B) 30 kg
(C) 32 kg
(D) 24 kg
(E) None of the above/More than one of the above

Q88. Shashi loses 25% by selling oranges at the rate of 150 per dozen. At what rate should she sell them to get a profit of 20%?
(A) 230 per dozen
(B) 240 per dozen
(C) 250 per dozen
(D) 220 per dozen
(E) None of the above/More than one of the above

Q89. The lengths of the diagonals of a rhombus are 10 cm and 24 cm. Its perimeter is
(A) 52 cm
(B) 56 cm
(C) 60 cm
(D) 48 cm
(E) None of the above/More than one of the above

Q90. A train of length 140 m is running at a speed of 60 km/hr and a dog is running in the same direction parallel to the train at a speed of 18 km/hr. The train will cross the dog in
(A) 11 seconds
(B) 12 seconds
(C) 12 ½ seconds
(D) 10 seconds
(E) None of the above/More than one of the above

Q91. What type of lens is used in magnifying glass?
(A) Plano-concave lens
(B) Convex lens
(C) Convex mirror
(D) Concave lens
(E) None of the above/More than one of the above

Q92. The paramagnetic theory of magnetism applies to
(A) mercury
(B) iron
(C) platinum
(D) nickel
(E) None of the above/More than one of the above.

Q93. The nucleus of an atom consists of
(A) electrons and protons
(B) protons and neutrons
(C) electrons only
(D) electrons and neutrons
(E) None of the above/More than one of the above

Q94. The metallurgical process in which a metal is obtained in a fused state is called
(A) roasting
(B) calcination
(C) froth floatation
(D) smelting
(E) None of the above/More than one of the above

Q95. Which among the following are constituents of brass?
(A) Iron and zinc
(B) Copper and nickel
(C) Iron and copper
(D) Zinc and copper
(E) None of the above/More than one of the above

Q96. Which among the following is known as quicklime?
(A) CaCO2
(B) Ca(OH)2
(C) CaCl2
(D) CaO
(E) None of the above/More than one of the above

Q97. What happens to the weight of iron, when it rusts?
(A) Decreases then increases
(B) Increases then decreases
(C) Remains same
(D) Increases for a long time
(E) None of the above/More than one of the above

Q98. Which among the following is also known as white metal?
(A) Rhodium
(B) Platinum
(C) Palladium
(D) Nickel
(E) None of the above/More than one of the above

Q99. Consider the following statements with respect to noble metals :

1. Noble metals are found in pure form innature.
2. Uranium and lead are examples of noble metal.
   Which of the above statements is/are correct?
   (A) 2 only
   (B) Both 1 and 2
   (C) Brass is also noble metal
   (D) 1 only
   (E) None of the above/More than one of the above.
   
   Right Answer – D

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Q100. Consider the following statements:

1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water.
2. When methyl alcohol is added to water, the boiling point of water decreases.
   Which of the above statements is/are correct?
   (A) 1 only
   (B) 2 only
   (C) Both 1 and 2
   (D) Salt and methyl alcohol are the same in behaviour
   (E) None of the above/More than one of the above
   
   Right Answer – C

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