Using a graph paper draw a histogram for the given distribution showing the number of runs scored by 50 batsmen. Estimate the mode of the data:

From the top of a cliff, the angle of depression of the top and bottom of a tower are observed to be 45 and 60° respectively. If the height of the tower is 20 m. Find:

1. the height of the cliff
2. the
...

A pendulum has a frequency of 4 vibrations per second. An observer starts the pendulum and fires a gun simultaneously. He hears the echo from the cliff after 6 vibrations of the pendulum. If the...

Use the letters only written in the Periodic Table given below to answer the questions that follow:

1. State the number of valence electrons in atom J.
2. Which element shown forms ions with a single
...

State a method of soil conservation in the: river valleys prone to flood.

State two causes of energy loss in a transformer.

Copy and complete the following table which refers to the conversion of ions to neutral particles.

State the main functions of the following:

1. Medulla Oblongata
2. Cytokinins
3. Tears
4. Coronary Artery
5. Seminal Vesicles

In the given figure TP and TQ are two tangents to the circle with centre O, touching at A and C respectively. If ∠BCQ = 55^o and ∠BAP = 60^o, find:

Complete stoppage of menstrual cycle in females.

Give the Biological / technical term

Given below is an apparatus which was setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:

1. Name the process being
...

The vertices of a ∆ABC are A(3, 8), B(–1, 2) and C(6, -6). Find:

1. Slope of BC.
2. Equation of a line perpendicular to BC and passing through A.

State any one reason why the President is elected indirectly.

Mention the four seasons that prevail in India stating the months for each

It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.

1. Name the characteristic of sound associated with the above observation.
2. Give a reason
...

What is rain water harvesting?