Which of the following pairs are correctly matched?

Only (i) and (ii)

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(ii), (iii) and (iv)

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Only (i) and (iv)

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(i), (iii) and (iv)

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Solution

The correct option is D
(i), (iii) and (iv)

Crocodile is a reptile and it has a four-chambered heart.

Obelia belongs to the phylum Cnidaria. The cnidarian life cycle shows alteration of generations between polyps and medusae. This is called metagenesis.

Lemur is a mammal. All mammals are thecodonts, i.e. teeth are embedded in sockets in the jaws.

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Similar questions

Which of the following process / processes release heat ?
(i) condensation (ii) vaporisation (iii) freezing (iv) melting

(a) only (i) (b) only (iv) (c) (i) and (iii) (d) (ii) and (iv)

Q. Question 3
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only

Match the following:

$\begin{matrix} (i) & Can have variable composition of constituent elements & (A) & Compound (ii) & - - - is new substance formed due to reaction of two constituent elements & (B) & Mixture (iii) & Constituent elements can be separated easily & (C) & Element (iv) & Can be separated only by chemical or electrochemical reactions (v) & Composition is always fixed (vi) & Shows properties of constituent elements \end{matrix}$
The correct pairs are:-

Q. Question 3
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only

Match the following:

$\begin{matrix} (i) & Can have variable composition of constituent elements & (A) & Compound (i i) & ______ is new substance formed due to reaction of two constituent elements & (B) & Mixture (i i i) & Constituent elements can be separated easily & (C) & Element (i v) & Can be separated only by chemical or electrochemical reactions (v) & Composition is always fixed (v i) & Shows properties of constituent elements \end{matrix}$
The correct pairs are:-

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