If the side of a square are halved, then its area
(a) remains same               
(b) becomes half
(c) becomes one fourth         
(d) becomes double

If the sides of a square are halved, then its area

A closed vessel contains equal number of oxygen and hydrogen molecules at a total pressure of 740 mm. If oxygen is removed from the system, the pressure: 1)becomes half of 740 mm 2)becomes 1/3 rd of 740 mm 3)becomes double of 740 mm 4)remains unchanged.

If the radius of a cylinder is doubled and the height remains same, the volume will be (a) doubled (b) halved (c) same (d) four times

If the same mass is packed into a lesser volume its density becomes:

The resistance of a resistor is reduced to half of its initial value. In doing so, if other parameters of the circuit remain unchanged, the heating effects in the resistor will become (A) two times (B) half (C) one - fourth (D) four times

If A is a square matrix of order n such that its elements are polynomila in x and its r-rows become identical for x = k, then

If the height of a cylinder is doubled and radius remains the same, then volume will be (a) doubled (b) halved (c) same (d) four times

A closed container contains equal number of moles of two gases X and Y at a total pressure of 710 mm of Hg . If gas X is removed from the mixture , the pressure will (A) become double (B) become half (C) remain same (d) become one - fourth

In a cylinder, if radius is doubled and height is halved, curved surface area will be halved (b) doubled (c) same (d) four times

In a cylinder, if radius is doubled and height is halved, curved surface area will be (a) halved (b) doubled (c) same (d) four times