Resonance is not exhibited by………………. (a) phenol (b) aniline (c) nitrobenzene (d)cyclohexane
Answer: (d)cyclohexane
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Sodium chloride solution is added to lead nitrate solution. Also write the chemical equation for in each case.
Sodium chloride solution when added to lead nitrate solution, results in the formation of a precipitate of lead chloride and... View Article
Write the structural formula of Chloro-Ethane.
The structural formula of chloroethane is: CH3CH2Cl
What do clothes protect us from?
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What is double circulation? Draw its flow chart.
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Draw a simple diagram to show the layer of natural gas and petroleum deposit.
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Which one of the following is not a protein? (a) wool (b) nail (c) hair (d) DNA
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How much percentage of all communicable diseases are water borne? (a) 11% (b) 21% (c) 31% (d) 50%
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Define the terms (a) semipermeable membrane (b) osmosis
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Give reason (a) rings of cartilage are present in trachea.
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Explain why plants have low energy needs as compared to animals.
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Name the product and by-products of sugar industry?
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Draw a well-labelled diagram of nitrogen cycle?
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What is the shape of the body of a fish called?
Fishes have streamlined body shape that help them to move in water easily and smoothly.
When do people need repeated blood transfusion?
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What is the difference between vaccine and medicine?
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A set of Ecosystem is called a : (a) Biome (b) Climate (c) Subsystem (d) Structure
Answer: (a) Biome A set of Ecosystems is called a Biome. Also, read: Biome Definition
Starch is polymer of: (a) Glucose (b) Fructose (c) Maltose (d) Sucrose
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What is difference between botany and zoology?
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