(A) time

(B) speed of light

(C) distance

(D) mass

(A) 0 C

(B) -15 C

(C) 4 C

(D) 15 C

(A) It is very small in size

(B) It has only one electron

(C) Its energy levels are very close to each other

(D) it is highly electropositive

(A) of the surface tension of mercury

(B) mercury is a semisolid

(C) of the high viscosity of mercury

(D) the density of mercury is greater than that of steel

(A) a pair of scissors

(B)  a lever

(C) a ramp

(D) the pulley

(A) 300 deg cent

(B) 3000 deg cent

(C) 30000 deg cent

(D) 300000 deg cent

(A) alpha

(B) gamma

(C) infrared

(D) x-rays

(A) 10 ohm

(B) 1000 ohm

(C) 10000 ohm

(D) 100000 ohm

(A) radium

(B) uranium

(C) actinium

(D) thorium

(A) Nature of signal only

(B) Nature of medium only

(C) Both (A) and (B)

(D) Neither A nor B