On which day of the menstrual cycle does ovulation take place?

1. 5th day
2. 28th day
3. 14th day
4. 1st day

The inert electrode used in the electrolysis of acidified water is:

1. Nickel
2. Platinum
3. Copper
4. Silver

The electrolysis of acidified water is an example of

1. Reduction
2. Oxidation
3. Redox reaction
4. Synthesis

Name any two trees found in Tropical Evergreen forests.

Which wire in a power circuit is connected to the metallic body of the appliance?

The mean of the following data is 16. Calculate the value of f

A half metre rod is pivoted at the centre with two weights of 20 gf and 12 gf suspended at a perpendicular distance of 6 cm and 10 cm from the pivot respectively as shown below.

1. Which of the two
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Mention two reasons why more people use railways rather than airways

Name the highest criminal court in a district.

Give the names of two leaders who led the Home Rule Movement in India.

Give a reason: Cottage industries are significant for our economy

A solid metallic sphere of radius 6 cm is melted and made into a solid cylinder of height 32 cm. Find the:

1. radius of the cylinder
2. curved surface area of the cylinder

Take π = 3.1

Write any two contributions of Lala Lajpat Rai to the National Movement.

State any one reason why the President is elected indirectly.

(i) Define moment of force.

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

Give suitable biological reason: The birth rate in India is very high.