## 1. Which of the following is NOT a property of an ideal fluid?

### Answer:

### Explanation:

Fluids, whether ideal or real, don't have a definite shape but take the shape of the container they are in.

## 2. Archimedes' principle states that an object submerged in a fluid experiences a buoyant force equal to:

### Answer:

### Explanation:

According to Archimedes' principle, the upward buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid that the body displaces.

## 3. If a fluid flows steadily, which of the following quantities remains constant along a streamline?

### Answer:

### Explanation:

In steady flow, the fluid properties such as density, pressure, and speed remain constant at a point along a streamline.

## 4. The pressure at a point in a fluid is the same:

### Answer:

### Explanation:

According to Pascal's law, pressure in a fluid at rest is the same in all directions.

## 5. The viscosity of a liquid:

### Answer:

### Explanation:

For most liquids, viscosity decreases with an increase in temperature. However, for some exceptional cases, it might increase.

## 6. Surface tension is due to:

### Answer:

### Explanation:

Surface tension arises because of the cohesive forces between molecules in the liquid.

## 7. The unit of surface tension is:

### Answer:

### Explanation:

Surface tension is defined as force per unit length, so its unit is N/m.

## 8. Bernoulli’s theorem is based on the conservation of:

### Answer:

### Explanation:

Bernoulli’s theorem is derived from the principle of conservation of energy.

## 9. A fluid in a steady flow has a constant:

### Answer:

### Explanation:

For an incompressible fluid in steady flow, the density remains constant.

## 10. The pressure inside a soap bubble of radius r is ___________ compared to the outside pressure.

### Answer:

### Explanation:

Due to surface tension, the pressure inside a soap bubble is greater than the outside pressure.

## 11. In the equation of continuity, AV = constant. Here, A represents the cross-sectional area, and V represents the:

### Answer:

### Explanation:

In the equation of continuity for steady flow, the product of the cross-sectional area (A) and velocity (V) remains constant.

## 12. The rise of liquid in a capillary tube is due to:

### Answer:

### Explanation:

The rise or fall of a liquid in a capillary tube is due to adhesive forces between the liquid and the walls of the tube.

## 13. Stoke's law is applicable for:

### Answer:

### Explanation:

Stoke's law is applicable to small spherical objects moving in a laminar flow of a viscous medium.

## 14. Fluid dynamics studies the ____________ of fluids.

### Answer:

### Explanation:

Fluid dynamics deals with the study of fluids in motion.

## 15. Torricelli's theorem relates:

### Answer:

### Explanation:

Torricelli's theorem relates the speed of fluid flowing out of an orifice to the height of the fluid column above the orifice.