Home
Class 11
CHEMISTRY
Assertion : H2O is the only hydride of g...

Assertion : `H_2O` is the only hydride of group 16 which is a liquid at ordinary temperature.
Reason : In ice, each oxygen atom is surrounded by two covalent bonds and two hydrogen bonds.

A

If both (A) and (R) are correct and (R) is the correct explanation of (A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
Due to extensive H-bonding, water exists as associated molecules. As a result, it has high b.p. and thus water is a liquid at room temperature.
Promotional Banner

Similar Questions

Explore conceptually related problems

In the following question, an Assertion (A) is followed by a corresponding Reason (R). Use the following keys to choose the appropriate answer. Assertion : In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons. Reason : Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

Assertion : In epsom salt, there are six water molecules are co-ordinated to Mg metal atom Reason : In epsom salt, only two molecules of water are hydrogen bonded to SO_(4)^(2-) ion (I) Both assertion and reason are true and reason is the correct explanation of assertion (II) Both assertion and reason are true and reason is not the correct explanation of assertion (III) Assertion is true and reason is false (IV) Both assertion and reason are false

In silicon dioxide : each siliçon atom is surrunded by four oxygen atoms and each oxygen atoms is bonded to two silicon atoms, silicon atom is bonded to two oxygen atoms , there are double bond between silica and oxygen atoms, silicon atom is bonded to five oxygen atoms

Assertion: CO_2 is non polar, while ROR is polar in nature. Reason: The dipole moments of two CO bonds are equal and opposite to each other in CO_2 , while in R-O-R molecules two dipoles of the R-O bonds are inclined to each other at an angle of 110°.