All the food chains begin with green plants

All the food chains begin with green plants.

Give biological explanation

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Name the two Presidents under whom the first two sessions

Name the two Presidents under whom the first two sessions of the Indian National Congress were held.

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Name the following: A by-product of sugar industry which is used in the manufacture of wax

Name the following: A by-product of sugar industry which is used in the manufacture of wax and shoe polish.

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Copper sulphate solution reacts with sodium hydroxide solution

Copper sulphate solution reacts with sodium hydroxide solution to form a precipitate of copper hydroxide according to the equation:

 2NaOH + CuSO4 → Na2SO4 + Cu(OH)2 ↓

(i) What mass of copper...

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Mawsynram receives the highest average annual rainfall

Give a reason for each of the following: Mawsynram receives the highest average annual rainfall.

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When an ovum gets fertilized, menstrual cycle stops

When an ovum gets fertilized, menstrual cycle stops temporarily in a woman.

Give scientific reasons.

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Explain briefly the term Court of Record

Explain briefly the term ‘Court of Record’ with reference to the High Court.

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With reference to the terms Mechanical Advantage, Velocity Ratio and efficiency

With reference to the terms Mechanical Advantage, Velocity Ratio and efficiency of a machine, name and define the term that will not change for a machine of a given design.

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Name the gas that is produced in - Action of dilute hydrochloric acid on sodium sulphide

Name the gas that is produced in - Action of dilute hydrochloric acid on sodium sulphide

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Which one of the following is a Greenhouse gas

Which one of the following is a Greenhouse gas

  1. Oxygen
  2. Methane
  3. Sulphur dioxide
  4. Nitrogen
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Define moment of force

(i) Define moment of force.

 (ii) Write the relationship between the SI and CGS unit of moment of force.

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The diagram given below represents a plant cell after being placed in a strong sugar solution

The diagram given below represents a plant cell after being placed in a strong sugar solution. Study the diagram and answer the questions that follow: 

  1. What is the state of the cell shown in the
  2. ...
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Mention two steps taken by the government to boost agricultural production

Mention two steps taken by the government to boost agricultural production in India

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