MCQ
Mercury does not wet glass, wood or iron because
  • A
    Cohesive force is less than adhesive force
  • Cohesive force is greater than adhesive force
  • C
    Angle of contact is less than 90
  • D
    Cohesive force is equal to adhesive force

Answer

Correct option: B.
Cohesive force is greater than adhesive force
(b)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Cathode rays are produced when the pressure is of the order of
Which relation is correct for isometric process
Three blocks $A, B$ and $C$ weighing $1,8$ and $27\ kg$ respectively are connected as shown in the figure with an inextensible string and are moving on a smooth surface. $T_3$ is equal to $36\ N$. Then $T_2$ isImage
The range of a particle when launched at an angle of $15^{\circ}$ with the horizontal is $1.5 \ km$. What is the range of the projectile when launched at an angle of $45^{\circ}$ to the horizontal
A metal bar of length $L$ and area of cross-section $A$ is clamped between two rigid supports. For the material of the rod, its Young's modulus is $Y$ and coefficient of linear expansion is $\alpha$. If the temperature of the rod is increased by $\Delta t^{\circ} C$, the force exerted by the rod on the supports is
A beaker is completely filled with water at $4^{\circ} \mathrm{C}$. It will overflow if
$X$-rays and gamma rays are both electromagnetic waves. Which of the following statements is true
One mole of helium is adiabatically expanded from its initial state $\left(P_i, V_i, T_i\right)$ to its final state $\left(P_f, V_f, T_f\right)$. The decrease in the internal energy associated with this expansion is equal to
A student attempts to pull himself up by tugging on his hair. He will not succeed
A monoatomic ideal gas, initially at temperature $T_1$, is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature. $T_2$ by releasing the piston suddenly. If $L_1$ and $L_2$ are the lengths of the gas column before and after expansion respectively, then $T_1 / T_2$ is given by