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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.
| 5101. |
Which of the following is used as a reducing agent in the extraction of iron metal ? (a) coal (b) bitumen (c) charcoal (d) coke |
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Answer» Which of the following is used as a reducing agent in the extraction of iron metal ? (a) coal (b) bitumen (c) charcoal (d) coke |
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| 5102. |
Your LPG gas stove at home is giving yellow flame.What can this mean?explain. |
| Answer» Your LPG gas stove at home is giving yellow flame.What can this mean?explain. | |
| 5103. |
The exchange of incoming and outgoing radiations that warms the Earth is called ___. |
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Answer» The exchange of incoming and outgoing radiations that warms the Earth is called |
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| 5104. |
How is Electricity Genrated in New Delhi ? 1. Hydro-electricity 2. Thermal Electricity (This Question is not From Book. I Am Just Curious to Know The Answer) |
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Answer» How is Electricity Genrated in New Delhi ? 1. Hydro-electricity 2. Thermal Electricity (This Question is not From Book. I Am Just Curious to Know The Answer) |
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| 5105. |
While researching on various air pollutants, Ravi came across gas 'X'. He concluded that 'X' is a poisonous gas and has a strong smell of rotten eggs. Which among the following can be the gas 'X'? |
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Answer» While researching on various air pollutants, Ravi came across gas 'X'. He concluded that 'X' is a poisonous gas and has a strong smell of rotten eggs. Which among the following can be the gas 'X'? |
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| 5106. |
Differentiate between physical change and chemical change. [5 MARKS] |
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Answer» Differentiate between physical change and chemical change. [5 MARKS] |
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| 5107. |
Mention the contribution of Mendeleev's periodic table. What are the drawbacks of Mendeleev's periodic table? |
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Answer» Mention the contribution of Mendeleev's periodic table. What are the drawbacks of Mendeleev's periodic table? |
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| 5108. |
In which liquid phosphorus is stored? |
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Answer» In which liquid phosphorus is stored? |
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| 5109. |
What is a fuel? On what parameters do we judge whether the fuel is good or not? [5 MARKS] |
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Answer» What is a fuel? On what parameters do we judge whether the fuel is good or not? [5 MARKS] |
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| 5110. |
Which of the following is not a natural source of air pollution? |
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Answer» Which of the following is not a natural source of air pollution? |
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| 5111. |
Methane (from natural gas) is mixed with steam, compressed at 30 atm pressure and passed over a nickel about 8000C to form _______ . |
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Answer» Methane (from natural gas) is mixed with steam, compressed at 30 atm pressure and passed over a nickel about 8000C to form _______ . |
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| 5112. |
Which amongst the following does not have neutrons in their atom? |
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Answer» Which amongst the following does not have neutrons in their atom? |
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| 5113. |
Water works as a fire extinguisher by removing |
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Answer» Water works as a fire extinguisher by removing |
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| 5114. |
When silver metal reacts with sulfur in the air, a new substance is formed. This is called _________ and is formed through _________ change. |
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Answer» When silver metal reacts with sulfur in the air, a new substance is formed. This is called _________ and is formed through _________ change. |
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| 5115. |
Ruby and sapphire are gem forms of which mineral? |
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Answer» Ruby and sapphire are gem forms of which mineral? |
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| 5116. |
Define potential energy. An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object? [3 MARKS] |
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Answer» Define potential energy. An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object? [3 MARKS] |
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| 5117. |
The major constituent of a colloid is dispersion ___ and minor constituent is dispersed phase. |
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Answer» The major constituent of a colloid is dispersion |
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| 5118. |
Crystallisation is better than simple evaporation because: |
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Answer» Crystallisation is better than simple evaporation because: |
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| 5119. |
The power of a motor pump in your neighbor's house is 20W. Find the work done by the pump in one minute? |
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Answer» The power of a motor pump in your neighbor's house is 20W. Find the work done by the pump in one minute? |
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| 5120. |
Which technique involves throwing the mixture into the air so that the wind blows away the lighter chaff, while the heavier grains fall back down for recovery? |
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Answer» Which technique involves throwing the mixture into the air so that the wind blows away the lighter chaff, while the heavier grains fall back down for recovery? |
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| 5121. |
Which of these is a way to control air pollution? |
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Answer» Which of these is a way to control air pollution? |
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| 5122. |
Match the alloys of column I with their constituents of column II Alloys Constituents (a) Nichrome (i) Aluminium + Nickel + Cobalt (b) Bronze (ii) Copper + Tin (c) Alnico (iii) Nickel + Chromium + Iron |
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Answer» Match the alloys of column I with their constituents of column II
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| 5123. |
The moving away of molecules close to a source of heat and of those molecules which are away from the source of heat towards the source is called ____________. |
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Answer» The moving away of molecules close to a source of heat and of those molecules which are away from the source of heat towards the source is called ____________. |
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| 5124. |
The contact angle between a solid and a liquid is a property of? |
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Answer» The contact angle between a solid and a liquid is a property of? |
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| 5125. |
A fuel X has very high heat content and burns without soot. It is highly inflammable and the chance of fire hazard is also very high. Which of the following among these is most probably fuel X? |
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Answer» A fuel X has very high heat content and burns without soot. It is highly inflammable and the chance of fire hazard is also very high. Which of the following among these is most probably fuel X? |
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| 5126. |
On a cloudy day, a sealed packet of potato chips is taken to the top of a mountain. The packet is found to be blown up like a balloon. This could be because |
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Answer» On a cloudy day, a sealed packet of potato chips is taken to the top of a mountain. The packet is found to be blown up like a balloon. This could be because |
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| 5127. |
Thomson compared atom to watermelon and thus derived some conclusions. Which of the following is his conclusion? |
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Answer» Thomson compared atom to watermelon and thus derived some conclusions. Which of the following is his conclusion? |
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| 5128. |
What is Le Chatelier's principle? |
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Answer» What is Le Chatelier's principle? |
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| 5129. |
Immersion rods for heating liquids are made up of metals. Give reason |
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Answer» Immersion rods for heating liquids are made up of metals. Give reason |
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| 5130. |
In which zone of a candle flame : (a) partial combustion of fuel takes place, and (b) complete combustion of fuel takes place ? |
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Answer» In which zone of a candle flame : (a) partial combustion of fuel takes place, and (b) complete combustion of fuel takes place ? |
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| 5131. |
For which of the following gas, Haemoglobin has the maximum affinity? |
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Answer» For which of the following gas, Haemoglobin has the maximum affinity? |
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| 5132. |
Which of the following greenhouse gas is responsible for plants growth and a life threat to humans? |
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Answer» Which of the following greenhouse gas is responsible for plants growth and a life threat to humans? |
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| 5133. |
Which of the following is correct with respect to elasticity ? |
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Answer» Which of the following is correct with respect to elasticity ? |
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| 5134. |
Which of the following is true regarding the process of diffusion? |
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Answer» Which of the following is true regarding the process of diffusion? |
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| 5135. |
Fire is the result of which chemical reaction? |
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Answer» Fire is the result of which chemical reaction? |
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| 5136. |
Why ice is lighter than liquid? Is all object follow this rule? |
| Answer» Why ice is lighter than liquid? Is all object follow this rule? | |
| 5137. |
Why is rayon preferred over silk ? |
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Answer» Why is rayon preferred over silk ? |
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| 5138. |
Liquid should have the difference 30 degree in their boiling point to take care for fractional distillation |
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Answer» Liquid should have the difference 30 degree in their boiling point to take care for fractional distillation |
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| 5139. |
Give reason for the following : Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not |
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Answer» Give reason for the following : Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not |
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| 5140. |
50kJ of energy causes a displacement of 25m in a body in the direction of force in 2.5s. Find the power in a unit of horse power. |
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Answer» 50kJ of energy causes a displacement of 25m in a body in the direction of force in 2.5s. Find the power in a unit of horse power. |
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| 5141. |
Which type of coal has the highest percentage of carbon? |
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Answer» Which type of coal has the highest percentage of carbon? |
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| 5142. |
Differentiate between thermosetting plastics and thermoplastics using examples. [3 MARKS] |
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Answer» Differentiate between thermosetting plastics and thermoplastics using examples. [3 MARKS] |
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| 5143. |
Why are the various allotropes of carbon have different chemical and physical properties? |
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Answer» Why are the various allotropes of carbon have different chemical and physical properties? |
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| 5144. |
Out of the following distillates of coal, which one readily undergo combustion? |
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Answer» Out of the following distillates of coal, which one readily undergo combustion? |
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| 5145. |
How to balance chemical equation |
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Answer» How to balance chemical equation |
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| 5146. |
Explain why are gases compressed but not liquids ? |
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Answer» Explain why are gases compressed but not liquids ? |
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| 5147. |
So, rusting of iron is a chemical change or physical change??? |
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Answer» So, rusting of iron is a chemical change or physical change??? |
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| 5148. |
A molecule of hydrogen has ________ . |
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Answer» A molecule of hydrogen has ________ . |
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| 5149. |
What is the average energy density of hydrogen compared to petrol? |
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Answer» What is the average energy density of hydrogen compared to petrol? |
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| 5150. |
Why does the increased level of nutrients (or fertilisers) in the water affect the survival of aquatic organisms (like fish)? |
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Answer» Why does the increased level of nutrients (or fertilisers) in the water affect the survival of aquatic organisms (like fish)? |
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