The value of universal gas constant

(a)

3.81 J mol^–1 K^–1

(b)

8.03 J mol^–1 K^–1

(c)

1.38 J mol^–1 K^–1

(d)

8.31 J mol^–1 K^–1

If a substance is heated or cooled, the change in mass of that substance is

(a)

positive

(b)

negative

(c)

zero

(d)

none of the above

If a substance is heated or cooled, the linear expansion occurs along the axis of

(a)

X or –X

(b)

Y or –Y

(c)

both (a) and (b)

(d)

(a) or (b)

Temperature is the average ______ of the molecules of a substance

(a)

difference in K.E and P.E

(b)

sum of P.E and K.E

(c)

difference in T.E and P.E

(d)

difference in K.E and T.E

In the Given diagram, the possible direction of heat energy transformation is

(a)

A\(\leftarrow\)B, A\(\leftarrow\)C, B\(\leftarrow\)C

(b)

A\(\rightarrow\)B, A\(\rightarrow\)C, B\(\rightarrow\)C

(c)

A\(\rightarrow\)B, A\(\leftarrow\)C, B\(\rightarrow\)C

(d)

A\(\leftarrow\)B, A\(\rightarrow\)C, B\(\leftarrow\)C