General Ability (Part-2) NDA/NA Solved Paper 2020-I

Total Questions: 100

71. In an incandescent electric bulb, the filament ofthe bulb is made up ofwhich metal?

Correct Answer: (c) Tungsten

72. Two equal resistors R are connected in parallel, and a battery of 12 V is connected across this combination. A dc current of 100 mA flows through the circuit as shown below:

The value of R is

Correct Answer: (b) 240 Ω

73. Which one of the following is NOT the unit of energy?

Correct Answer: (d) kg-metre/sec²

74. Which one of the following statements is NOT correct?

Correct Answer: (d) Heating capacity of biogas is very low

75. In prokaryotic organisms, nuclear region is not surrounded by a membrane. This undefined nuclear region is known as

Correct Answer: (b) Nucleoid

76. Which one of the following plant tissues has dead cells?

Correct Answer: (d) Sclerenchyma

77. Cartilage is NOT found in

Correct Answer: (d) urinary bladder

78. Two planets orbit the Sun in circular orbits, with their radius of orbit as R₁ = R and R₂ = 4R. Ratio of their periods (T₁/T₂) around the Sun will be

Correct Answer: (b) 1/8

79. A metallic wire having resistance of 20Ω is cut into two equal parts in length. These parts are then connected in parallel. The resistance ofthis parallel combination is equal to

Correct Answer: (c) 5Ω

80. Light ofuniform intensity impinges perpendicularly on a totally reflecting surface. Ifthe area ofthe surface is halved, the radiation force on it will become

Correct Answer: (b) half