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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
60% of a zero order reacton completes in 4 hours. 30% of the same reaction completes in: |
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Answer» 60% of a zero order reacton completes in 4 hours. 30% of the same reaction completes in: |
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| 152. |
What is meant by reeling in silk production? |
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Answer» What is meant by reeling in silk production? |
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| 153. |
What is the difference between Natural detergents and man-made detergents ? |
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Answer» What is the difference between Natural detergents and man-made detergents ? |
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| 154. |
Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9, respectively. Arrange the pH of the solutions in increasing order of hydrogen-ion concentration. |
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Answer» Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9, respectively. Arrange the pH of the solutions in increasing order of hydrogen-ion concentration. |
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| 155. |
What is the function of skimmer in wastewater treatment plant? |
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Answer» What is the function of skimmer in wastewater treatment plant? |
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| 156. |
A solution ofCuSO4 is electrolyzed for 10 minutes with a current of 1.61 ampere. The mass of copper (in g) deposited at the cathode is (sum the answer upto two decimal places)(Given : Molar mass of Cu=63.5 g/ mol) |
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Answer» A solution ofCuSO4 is electrolyzed for 10 minutes with a current of 1.61 ampere. The mass of copper (in g) deposited at the cathode is (sum the answer upto two decimal places) (Given : Molar mass of Cu=63.5 g/ mol) |
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| 157. |
Which of the following does not alter during a physical change? |
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Answer» Which of the following does not alter during a physical change? |
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| 158. |
Give examples to explain the difference between changes that can or cannot be reversed. |
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Answer» Give examples to explain the difference between changes that can or cannot be reversed. |
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| 159. |
What is voltaic pile? |
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Answer» What is voltaic pile? |
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| 160. |
Two elements X(atomic mass=50) & Y(atomic mass=16) combine to give a compound having 32% Y. What is the formula of the compound? |
| Answer» Two elements X(atomic mass=50) & Y(atomic mass=16) combine to give a compound having 32% Y. What is the formula of the compound? | |
| 161. |
What is sericulture? Briefly explain the steps involved in the processing of silk? |
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Answer» What is sericulture? Briefly explain the steps involved in the processing of silk? |
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| 162. |
The crowns of trees in a thick forest together form a 'roof' over other plants. What is this roof known as? |
| Answer» The crowns of trees in a thick forest together form a 'roof' over other plants. What is this roof known as? | |
| 163. |
Question 13 (b)At room temperature the forces of attraction between the particles of solid substances are ___ (stronger/weaker) than those which exist in the gaseous state. |
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Answer» Question 13 (b) At room temperature the forces of attraction between the particles of solid substances are |
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| 164. |
What is meant by atomicity? What is the atomicity of the following?(i) Oxygen (ii) Ozone (iii) Neon (iv) Sulphur |
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Answer» What is meant by atomicity? What is the atomicity of the following? (i) Oxygen (ii) Ozone (iii) Neon (iv) Sulphur |
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| 165. |
Why should we conserve water |
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Answer» Why should we conserve water |
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| 166. |
Explain the following types of chemical reactions giving two examples for each of them.(a) Displacement reaction(b) Double decomposition reaction |
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Answer» Explain the following types of chemical reactions giving two examples for each of them. (a) Displacement reaction (b) Double decomposition reaction |
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| 167. |
Write any two things that may occur due to excess acid in stomach. |
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Answer» Write any two things that may occur due to excess acid in stomach. |
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| 168. |
Notice these expressions in the text. Infer their meaning from the context. a holistic and ecological view inter alia sustainable development decimated languish catastrophic depletion ignominious darkness transcending concern |
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Answer» Notice these expressions in the text. Infer their meaning from the context.
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| 169. |
Is burning a candle is a chemical or physical change or both |
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Answer» Is burning a candle is a chemical or physical change or both |
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| 170. |
Which among the given apparatus was not used in the production of cathode rays? |
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Answer» Which among the given apparatus was not used in the production of cathode rays? |
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| 171. |
Rearrange the jumbled letter to obtain the name of an indicator. MUSLIT --> ___ |
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Answer» Rearrange the jumbled letter to obtain the name of an indicator. MUSLIT --> |
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| 172. |
Who prepared to water in the laboratory for the first time? |
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Answer» Who prepared to water in the laboratory for the first time? |
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| 173. |
What will be the consequence if iron will be exposed in dry air with anhydrous crystal kept inside? |
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Answer» What will be the consequence if iron will be exposed in dry air with anhydrous crystal kept inside? |
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| 174. |
Question 11 State whether the following statements are True or False. If false, write the correct statement (a) Water vapour is the gaseous form of water. (b) Ice is solid whereas snow is the semi-solid form of water. (c) Ocean water cannot be used for domestic purposes. (d) Rapid growth of industries is one of the causes for water shortage. |
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Answer» Question 11 State whether the following statements are True or False. If false, write the correct statement |
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| 175. |
Question 16Earthworms are known as ‘farmer’s friends’. Why? |
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Answer» Question 16 Earthworms are known as ‘farmer’s friends’. Why? |
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| 176. |
Bleaching powder is obtained when: |
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Answer» Bleaching powder is obtained when: |
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| 177. |
Classify the changes involved in the following processes as physical or chemical changes:(a) Photosynthesis(b) Dissolving sugar in water(c) Burning of coal(d) Melting of wax(e) Beating aluminium to make aluminium foil(f) Digestion of food |
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Answer» Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax (e) Beating aluminium to make aluminium foil (f) Digestion of food |
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| 178. |
What are polyatomic ions? Give examples. |
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Answer» What are polyatomic ions? Give examples. |
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| 179. |
how to show that setting of curd is a chemical change |
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Answer» how to show that setting of curd is a chemical change |
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| 180. |
Look at the chart of the periodic table in your school. Which initial letter is the most common among the symbols of elements? |
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Answer» Look at the chart of the periodic table in your school. Which initial letter is the most common among the symbols of elements? |
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| 181. |
Which of the following reactions is the metal displacement reaction? |
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Answer» Which of the following reactions is the metal displacement reaction? |
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| 182. |
Do you find the poem humorous? Read aloud lines which make you laugh. |
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Answer» Do you find the poem humorous? Read aloud lines which make you laugh. |
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| 183. |
Write your observation and conclusion for the following:(a) When a few marbles are put in a glass half-filled with water.(b) Ice is kept at room temperature. |
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Answer» Write your observation and conclusion for the following: |
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| 184. |
Question 7 (a) Fill in the blank: (a) The insects, butterflies, honeybees and birds help flowering plants in __. |
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Answer» Question 7 (a) |
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| 185. |
Match the numbers with the gases. |
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Answer» Match the numbers with the gases.
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| 186. |
what is trough? |
| Answer» what is trough? | |
| 187. |
A lead storage battery containing 5.0L of H2SO4 solution is operated for 9.65×105s with a steady current of 100 mA. Assuming volume of the solution remains constant, normality of H2SO4 will : |
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Answer» A lead storage battery containing 5.0L of H2SO4 solution is operated for 9.65×105s with a steady current of 100 mA. Assuming volume of the solution remains constant, normality of H2SO4 will : |
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| 188. |
Low cost onsite sewage disposal systems includes: |
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Answer» Low cost onsite sewage disposal systems includes: |
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| 189. |
Write the rules involved in writing a chemical formula. |
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Answer» Write the rules involved in writing a chemical formula. |
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| 190. |
How does climate of a place affect the soil formation |
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Answer» How does climate of a place affect the soil formation |
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| 191. |
Chemical formula of exothermic reaction |
| Answer» Chemical formula of exothermic reaction | |
| 192. |
Is the ozone an odd electron molecule?OR Is the ozone contain or formed by odd electron bond?? |
| Answer» Is the ozone an odd electron molecule?OR Is the ozone contain or formed by odd electron bond?? | |
| 193. |
Convert 1coloumb to statcoulomb using dimensional analysis |
| Answer» Convert 1coloumb to statcoulomb using dimensional analysis | |
| 194. |
What are the occupational hazards faced by the workers in the wool industry? [3 MARKS] |
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Answer» What are the occupational hazards faced by the workers in the wool industry? [3 MARKS] |
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| 195. |
humus is dark brown in colour and contsistsof decaying remains of plants and animals decomposers of soil are (1) bacteria (2) fungi (3) earthworms (4) bactrbac and fungi (5) all options (1),(2),(3) |
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Answer» humus is dark brown in colour and contsistsof decaying remains of plants and animals decomposers of soil are (1) bacteria (2) fungi (3) earthworms (4) bactrbac and fungi (5) all options (1),(2),(3) |
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| 196. |
Your mother daily cooks food for you from raw grains and raw vegetables. Which type of change is this? |
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Answer» Your mother daily cooks food for you from raw grains and raw vegetables. Which type of change is this? |
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| 197. |
In the soap micelles |
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Answer» In the soap micelles |
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| 198. |
If you add impurities to water, what will happen to the boiling point? |
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Answer» If you add impurities to water, what will happen to the boiling point? |
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| 199. |
Why only HCl and not sulphuric acid is used to remove the copper rusting? |
| Answer» Why only HCl and not sulphuric acid is used to remove the copper rusting? | |
| 200. |
define phenolphthalein and what colour it gives ? |
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Answer» define phenolphthalein and what colour it gives ? |
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