Explanation

In solids, particles mainly exhibit vibrational motion about their fixed positions.

They have limited translational and rotational motion compared to liquids and gases.

Explanation

Homogeneous liquid equilibria can be affected by temperature changes,

It as the temperature can influence the equilibrium position.

Pressure changes may also affect equilibria but to a lesser extent than temperature changes.

Explanation

The order of a reaction can be fractional, whereas molecularity (the number of molecules involved in the reaction)

It is always a whole number and cannot be fractional

Explanation

Be(OH)₂ is an amphoteric hydroxide, meaning it can act as both an acid and a base.

Mg(OH)₂ and Ca(OH)₂ are basic hydroxides.

Explanation

The efficiency of a Carnot engine is given by 

Efficiency = 1 − 𝑄 rejected /𝑄 accepted

where  𝑄 accepted and  𝑄 rejected is the heat absorbed and rejected, respectively.

Explanation

Polarization is a property of transverse waves, where the direction of vibration can be oriented in various directions.

Ultrasonic waves are longitudinal waves and cannot be polarized.

Explanation

The moment of inertia depends on the mass of the object,

how the mass is distributed relative to the axis of rotation,

and the axis of rotation itself,

but it does not depend on the angular velocity.

Explanation

To find the angle in radians per second, first convert the rpm (revolutions per minute) to radians per second.

3000 rpm =  3000/60 ​revolutions per second =  50 revolutions per second.

Each revolution is  2π radians.

So, 

50×2π=100π radians per second.

Explanation

The vector product (cross product) of two vectors gives a vector that is perpendicular to both original vectors.

Angular momentum is a vector product of position and linear momentum vectors.

Explanation

PbCl₂ (lead(II) chloride) is ionic.

Lead(II) chloride forms an ionic lattice structure with chloride ions,

while PbCl₄ is a covalent complex.