PSTET Paper 2 Science Unofficial Answer Key 2024 (Available)

121. Distil water is:

2. Insulator

122. Which gas is likely to be reduced in the atmosphere by deforestation?

3. Oxygen

123. The term used for total water content of the soil is known as:

3. Echard

124. The boundaries of earth tectonic plates are called

1. Fault zone Seismic zone

125. Tsunami is not caused by:

4. Lightning

126. Which of the following is true?
i. A charged gkass rod must attract a charged plastic straw
ii. The lightning conductor is incapable of protecting a building from lightning
iii. When a glass rod is rubbed with silk cloth, the cloth gets positively charged
iv. A copper rod can be easily charged by friction

iii. is true

127. Choose the wrong statement:
i. Heat can destroy magnetic properties of a magnet
ii. Magnets are made up of different materials and different shapes
iii. There is a minimum attraction in middle of a magnet
iv. Lodestone does not show magnetic properies

iv. is the wrong statement

128. Which of food consistent is needed in maximum amount in daily diet?

1. Carbohydrates

129. Oxalic acid is present in:

3. Banana

130. What is not correct about "El Nino"?

2. It has strong effect on marine life

131.

1. i-d, ii-b, iii-a, iv-d
2. i-c, ii-a, iii-d, iv-b
3. i-a, ii-c, iii-b, iv-a
4. i-b, ii-c, iii-d, iv-a

Option 4 is the correct answer

132. Assertion (A): All plants are not autotrophic
Reason (R): Insectivorous plants cannot synthesize their own food

Both A and R are true but R is not the correct explanation of A

133.

1. i-d, ii-a, iii-c, iv-b
2. i-b, ii-c, iii-d, iv-a
3. i-b, ii-d, iii-a, iv-c
4. i-c, ii-d, iii-a, iv-b

Option 4 is the correct answer

134. Ozone layer is present in:
i. Ionosphere
ii. Troposphere
iii. Stratosphere
iv. Mesosphere

Option iii. is the correct answer

135. Nylone, a fully synthetic fibre is made up of:

3. Carbon, Hydrogen, Chlorine and Nitrogen

136. Rubber is made by:

3. Molding

137. Which group consists of non-renewable organic resources?

2. Natural gas, oil and coal

138. Lion-tailed Macaque is:

1. Endangered

139. Law of Conservation of Momentum is based on:

3. Newton's third law of motion

140. Which is the correct order of frictional forces?

1. Rolling friction < Sliding friction < Static friction

141. Microorganisms that causes disease are also known as:

1. Pathogens

142. Which types of tests possess lowest reliability?

4. Non-Standadized subjective tests

143. Which of the following is not true about scientific knowledge?

1. Scientific Knowledge is absolute and eternal

144. What is a rubric?

4. An assessment that provides a weighted grad

145. Cognitive validity of a science curriculum is best explained if:

2. It engages students to generate and validate scientific knowledge

146. Match the following:

1. i-a, ii-c, iii-d, iv-b
2. i-c, ii-d, iii-b, iv-a
3. i-d, ii-c, iii-a, iv-b
4. i-a, ii-b, iii-d, iv-c

3. is the correct answer

147. What is a testable explanation for a natural phenomenon?

B. Theory

148. A visual learning tool that shows relationship between different ideas is:

2. Concept Map

149. Which of the following is not a feature of Science?

4. Replicability

150. A teacher who adopts constructive approach, view his students as:

1. Tabula Rasa