Answer key: NDA NA 2, 2010 English and GK PART II SOLVED PAPER ANSWER

101. d. The final potential is always the mean of the original
potentials of the two spheres.
102. a. have different cross sections.
103. c. One fourth
104. c. along the perpendicular drawn from a point on the wire.
105. d. Only at the centre.
106. a. Increase.
107. b. along the radius.
108. a. approximatively mg.
109. B. air friction holds the ball back.
110. b. Gamma ray.
111. B. Short wavelength of radiation.
112. C. Fusion
113. D. Hawking theory of black hole.
114. d. faster than the light communication of signals.
115. A. water expands when freezes.
116. Correct statement about Nirupam Sen.
Ans: C. Both 1 and 2 are correct.
117. D. V. K. Murthy
118. Correct statement regarding General V. K. Singh
Ans: A. 1, 2 and 3.
119. B. Yakshagana
120. Kerela 2000 employess retirement.
Ans: B. 1 and 3 only.
121. Maruti 800 production stopped because
Ans: B. 1 only.
122. A. 1 only.
123. T-20..
Ans: a. 1 only.
124. Correct statement about INS Arihant
Ans: C. 1 and 3 only.
125. Zaranj-Delaram road:
Ans: b. 1 and 3 only.
126-129: Match list 1, 2, 3, 4.
126. c
127. a
128. d
129. a
130. Statement regarding Swine Flu.
Ans: C. 2 and 3 only.
131. Properties of a good paint:
Ans: B. 1, 2 and 3.
132. D. The soap molecules bind with the soap, lift the soil and
keep it suspended which then can be rinsed away.
133. statement not correct about graphite
Ans: D. It is highest grade of coal.
134. A. Salts have ordered packing arrangements called lattices.
135. Correct statement about Ph scale.
Ans: B. 1,2 and 3.
136. b. decreases the oxidation number of an element in a given
substance.
137. d. carbon-dioxide from air is dissolved.
138. c. nitrogen from air is easily dissolved in diesel but not
dissolved in petrol.
139. Properties of water
B. only 2 and 3 only.
140. B. law of definite proportion
141. d. ammonium sulphate and potassium bromide.
142. c. Sublimation-evaporation-dissolution-decomposition
143. c. compound formed by combination of potassium iodide
and common salt
144. b. NACL
145. c. The constituents of a mixture can be separated by physical
methods but those of a compound can not be separated by
physical methods.
146. B. Acceleration. (Graph question)
147. C. Net downward force is equal to net upward force.
148. A. Reduced.
149. D. The two blocks displace equal volumes of water since they
have the same specify gravity and same mass.
150. B. The mass of water displaces is equal to the mass of ship.