How are the Rajya Sabha members elected?

The compound formed when ethene reacts with Hydrogen is _______ . (CH₄, C₂H₆, C₃H₈)

The individual flattened stacks of membranous structures inside the chloroplasts are known as:

1. Grana
2. Stroma
3. Thylakoids
4. Cristae

Solve the following inequation, write down the solution set and represent it on the real number line:

$$-2 + 10x \leq 13x + 10 \< 24 + 10x, x \in Z$$

The diagram given below represents the location and structure of an endocrine gland. Study the same and answer the questions that follow:

1. Name the endocrine gland shown in the diagram.
2. Name the
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How will you distinguish between dilute hydrochloric acid and dilute sulphuric acid using lead nitrate solution?

Give a reason: Petrochemical industries are usually located close to the oil refineries

Read the extract given below and answer the questions that follow:

Bassanio: A gentle scroll. - Fair lady, by your leave; [Kissing her]

I come by note, to give and to receive.
Like one of two...

Blood flows in arteries in spurts and is under pressure.

Give scientific reason.

The wave lengths for the light of red and blue colours are nearly 7.8 x 10^-7 m and 4.8x 10^-7 m respectively.

1. Which colour has the greater speed in a vacuum?
2. Which colour has a greater speed in
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Give the structural formulae of each of the following

1. 2-methyl propane
2. Ethanoic acid
3. Butan – 2 – ol

At the anode, when molten lead bromide is electrolyzed using graphite electrodes.

(i) Define couple

(ii) State the S.I. unit of moment of couple.

Explain why the forest cover in India is shrinking?

Sachin invests ₹8500 in 10%, ₹100 shares at ₹170. He sells the shares when the price of each share rises by ₹30. He invests the proceeds in 12% ₹100 shares at ₹125. Find:

1. the sale proceeds.
2. the number of
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Higher the pH value of a solution, the more __________ (acidic / alkaline) it is.