In some xerophytes leaves are modified into spines.

Draw the electron dot diagram for the compounds given below. Represent the electrons by (.) and (x) in the diagram. [Atomic No.: Ca = 20, O = 8, Cl = 17, H = 1]

1. Calcium oxide
2. Chlorine molecule
3. Water
...

Metals are good __________ (oxidizing agents / reducing agents) because they are electron __________ (acceptors/ donors).

What happens to the level of water when this setup is placed in

1. Humid conditions?
2. Windy conditions?

Briefly explain the following term: Power of accommodation

The complex consisting of a DNA strand and a core of histones.

Give appropriate biological or technical terms for the following:

With reference to the rise of ‘National Consciousness’ in India, Explain the influence of Western Education.

Name the highest criminal court in a district.

Briefly answer: Why is petroleum often referred to as "liquid gold"

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:

Choose the method of preparation of the following salts, from the methods given in the list:

[List: A. Neutralization B. Precipitation C. Direct combination D. Substitution]

1. Lead chloride
2. Iron (II)
...

By 1857, conditions were ripe for a mass uprising in the form of the Great Revolt of 1857. In this context, explain the following:

1. Any three Economic causes for the revolt of 1857.
2. Any three
...

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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Xylem transports starch from the leaves to all parts of the plant body.

Correct the following statements by changing the underlined words:

Solve 𝑥² + 7𝑥 = 7 and give your answer correct to two decimal places.

Prove that $(1 + \cot\theta - \csc\theta)(1+\tan\theta+\sec\theta) = 2$