Pressure, Flotation, Surface Tension, Density, Viscosity

Consider the following properties with respect to a 10 kg block of iron as compared to a 5 kg block of iron:

1. Inertia
2. Mass
3. Volume

Which of the above properties will be exactly twice for the 10 kg block compared to the 5 kg block of iron?

In which of the following cases would the level of mercury in a barometer fall?

1. It is taken from sea level to a high altitude
2. A storm is approaching
3. Radius of the barometer is increased

Select the correct option from the codes given below:

Which among the following is / are features of the Crazy balls?

1. Higher elasticity
2. Higher resilience
3. Higher viscosity

Select the correct option from the codes given below:

Consider the following statements regarding the Reynolds number:

1. It is a dimensionless quantity.
2. It is inversely proportional to the viscosity of a liquid.
3. It is directly proportional to the velocity of a liquid.
4. It is used for quantifying the laminar or turbulent flow of a liquid.

Which of the above statements is/are correct?

Consider the following statements regarding the speed of sound in solids:

1. Strong bonds between atoms or molecules in solids contribute to higher sound velocity.
2. Close packing of particles in solids enables faster transmission of sound waves.
3. Lower elasticity in solids compared to liquids and gases is a factor in higher sound velocity.
4. A well-defined and ordered arrangement of particles in solids aids the propagation of sound.

How many of the above statements are correct?