The diagram above shows three resistors connected across a cell of e.m.f. 1.8 V and internal resistance r. Calculate:

1. Current through 3 W resistor.
2. The internal resistance r.

The 4^th term of an A.P. is 22 and 15^th term is 66. Find the first term and the common difference. Hence find the sum of the series to 8 terms.

The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:

1. 1:2
2. 1:0.01
3. 1:1
4. 0.01:1 [Given that H=1, O=16]

From the list of terms given, choose the most appropriate term to match the given description. (calcination, roasting, pulverisation, smelting)

1. Crushing of the ore into a fine powder.
2. Heating of the
...

The sum of the first three terms of an Arithmetic Progression (A.P.) is 42 and the product of the first and third term is 52. Find the first term and the common difference.

A boy weighing 40kgf climbs up a stair of 30 steps each 20cm high in 4 minute and a girl weighing 30kgf does the same in 3 minutes. Compare:-

1. The work done by them.
2. The power developed by them.

Using properties of proportion solve for x, given

Name two varieties of millet grown in India.

The Council of Ministers headed by the Prime Minister, is the most Powerful Institution in the Indian Polity. In this context, answer the following: Write any four functions of the Cabinet.

The organic compound which undergoes substitution reaction is

1. C₂H₂
2. C₂H₄
3. C₁₀H₁₈
4. C₂H₆

In ∆PQR, MN is parrallel to QR and $\frac {𝑃𝑀}{𝑀q}=\frac{2}{3}$

i. $Find \frac{𝑀N}{𝑄R}$
ii. Prove that ∆OMN and ∆ORQ are similar.
iii. Find, Area of ∆OMN : Area of ∆ORQ

(i) Define couple

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

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

How they toiled and sweated to get the hay in! But their efforts were rewarded, for the harvest was an even bigger success than they...

Some women have facial hair like beard and moustache.

Give biological reason

State one advantage of inland waterways.

Copy and complete the following paragraph using the options given in brackets:

Alkenes are a homologous series of (i) _____ (saturated / unsaturated) hydrocarbons characterized by the general...