Carbon monoxide is dangerous when inhaled.

Give one geographical reason: Red soil requires irrigation.

With reference to the powers and functions of the High Court. Explain briefly the meaning and scope, The High Court as a Court of Record.

A hydrocarbon which is a greenhouse gas is:

A. Acetylene

B. Ethylene

C. Ethane

D. Methane

State your observations when ammonium hydroxide solution is added drop by drop and then in excess to each of the following solutions:

1. copper sulphate solution
2. zinc sulphate solution.

The diagram below shows the change of phases of a substance on a temperature vs time graph on heating the substance at a constant rate.

1. Why is the slope of CD less than slope of AB?
2. What is the
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Who appoints the Prime Minister of India

Substitution reactions are characteristic reactions of _____ .  (alkynes / alkenes / alkanes)

"Though Uttar Pradesh has the largest number of sugar mills yet Maharashtra is the largest producer of sugar." Give any two reasons to justify the statement.

A virtual, diminished image is formed when an object is placed between the optical centre and the principal focus of a lens.

1. Name the type of lens which forms the above image.
2. Draw a ray diagram to
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"The modern means of irrigation are gaining popularity." Give two reasons to justify this statement.

Briefly explain: Surface water

The formula that represents the simplest ratio of the various elements present in one molecule of the compound.

Mr. Sonu has a recurring deposit account and deposits ₹ 750 per month for 2 years. If he gets ₹ 19125 at the time of maturity, find the rate of interest.

With reference to the Mass Phase of the National Movement under the leadership of Gandhi, answer the following:

1. Briefly explain the Dandi March of 1930.
2. State any three reasons for the launching of the
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Explain why it is preferable to use a number of graphite electrodes as anode instead of a single electrode, during the above electrolysis.