Statement-I: Initially the term pseudo solid was given for solids which were easily distorted by bending and compressing forces. They even tend to flow slowly under its own weight and lose shape.

Statement-II: These characteristics are shown by pseudo solids as in pitch, glass and thus, the name pseudo solid was replaced by supercooled liquids.

I is correct but II is wrong

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I is wrong but II is correct

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Both I and II are correct and II is correct explanation of I

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Both I and II are correct but II is not correct explanation of I

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Solution

The correct option is D Both I and II are correct but II is not correct explanation of I
Pseudo solids are solids which are considered to be solid though they resemble liquid in many respects . They flow very slowly at room temperature and are considered as supercooled liquids. Amorphous solids are considered to be pseudo solid. For e.g. Glass.
Glass flows down as liquids (very slowly) and because of this, glass window panes of ancient monuments are found to be thicker at bottom.

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Q. Assertion :Initially the term pseudo solid was given for solids, which were easily distorted by bending and compression forces. They even tend to flow slowly under its own mass and lose shape. Reason: These characteristics are shown by pseudo solids as in pitch, glass and thus, the name pseudo solid was replaced by super cooled liquids.

Q. Read the following carefully to mark the correct option out of the options given below:

Statement I:

S i - S i

bond is weaker then

S i - O

bond.
Statement II: Silicon forms double bonds with itself.

Q. The following question consist of two statements. Mark the answer as follows.
(A) If both statements are CORRECT, and Statement II is the CORRECT explanation of Statement I.
(B) If both statements are CORRECT, and Statement II is CORRECT the CORRECT explanation of Statement I.
(C) If Statement I is CORRECT, but Statement II is INCORRECT.
(D) If Statement I is INCORRECT, but Statement II is CORRECT.

Statement I: Molarity and molality for very dilute aqueous solution is approximately equal.
Statement II: For all aqueous solutions, total mass of solvent is approximately equal to total volume of solution.

Statement I: Block $A$ is moving on the horizontal surface towards the right under the action of force $F$ . All surfaces are smooth. At the instant shown, the force exerted by block $A$ on block $B$ is equal to the net force on block $B$ .

Statement II: From Newton’s Third Law, the force exerted by Block $A$ on Block $B$ is equal in magnitude to force exerted by block $B$ on $A$ .

Q. Statement -

I

\to L = I \to ω

is always true for bodies of all shapes.
Statement-

II

\to τ = \frac{d \to L}{d t}

is always true in inertial frames.

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