State the three functions of the Vice-President.

Given below is a diagram representing a stage during the mitotic cell division. Study the diagram and answer the following questions:

1. Identify the stage by giving a suitable reason.
2. Is it a plant or
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In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t).

1. What is the phenotype and genotype of the F₁ generation if a homozygous tall plant is crossed with a homozygous
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A man observes the angle of elevation of the top of the tower to be 45^o. He walks towards it in a horizontal line through its base. On covering 20 m the angle of elevation changes to 60^o. Find the...

Given below are two stages in the evolution of man. Study them and answer the questions that follow:

1. Identify Australopithecus and Neanderthal man from the above pictures.
2. Mention two characteristic
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Why are South Indian rivers not ideal for the inland water transport?

The diagram below shows the core of a transformer and its input and output connections:

1. State the material used for the core.
2. Copy and complete the diagram of the transformer by drawing input and
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A battery of e.m.f. 12V and internal resistance 2 Ω is connected with two resistors A and B of resistance 4 Ω and 6 Ω respectively joined in series.

Find:

1. Current in the circuit.
2. The terminal voltage of
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Give a chemical test to distinguish between the following pairs of chemicals:

1. Lead nitrate solution and Zinc nitrate solution
2. Sodium chloride solution and Sodium nitrate solution

The conflict between the two sections of the Congress came to surface in its Session in 1906 at Calcutta. In this context, State any four methods that they advocated for the achievement of their aims.

Write a balanced chemical equation for the preparation of:

1. Ethene from bromoethane
2. Ethyne using calcium carbide
3. Methane from sodium acetate

Name the solution used to react with Bauxite as a first step in obtaining pure aluminum oxide, in the Baeyer’s process.

State any two functions of the UNICEF and any two functions of WHO.

Write balanced chemical equations for each of the following:

1. When excess of ammonia is treated with chlorine.
2. An equation to illustrate the reducing nature of ammonia.

Name a state where: Tube wells are common

The diagram given below represents a stage during cell division. Study the same and answer the questions that follow:

1. Identify whether it is a plant cell or an animal cell.
   Give a reason in support
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