Download App

4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
Consider the molecules $CH_4, NH_3$ and $H_2O.$ Which of the given statements is false?
  • A
    The $H - O - H$ bond angle in $H_2O$ is smaller than the $H - N - H$ bond angle in $NH_3.$
  • B
    The $H - C - H$ bond angle in $CH_4$ is larger than the $H - N - H$ bond angle in $NH_3.$
  • C
    The $H - C - H$ bond angle in $CH_4,$ the $H - N - H$ bond angle in $NH_3,$ and the $H - O - H$ bond angle in $H_2O$ are all greater than $90^o.$
  • ✓
    The $H - O - H$ bond angle in $H_2O$ is larger than the $H - C - H$ bond angle in $CH_4.$
✓

Answer

Correct option: D.
The $H - O - H$ bond angle in $H_2O$ is larger than the $H - C - H$ bond angle in $CH_4.$
d

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 4. Chemical bonding and molecular structure→4. Chemical bonding and molecular structure — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

During detection of phosphorus in an organic compound, yellow precipitate is formed due to the formation of
→
For a $d$ -electron, the orbital angular momentum is:
→
The law of definite proportions is not applicable to nitrogen oxide because
→
For a hypothetic reaction $A \to B$, the activation energies for forward and backward reactions are $19\, kJ/mole$  and $ 9 \,kJ/mole$  respectively. The heat of reaction is ....$kJ$
→
Given below are two statements.

Statement $I:$ According to Bohr's model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in positive charges on the nucleus as there is no strong hold on the electron by the nucleus.

Statement $II:$ According to Bohr's model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in principal quantum number.

In the light of the above statements, choose the most appropriate answer from the options given below:

→
Strongest reducing agent is
→
Given below are two statements:

Statement $I$ : The decrease in first ionization enthalpy from $B$ to $Al$ is much larger than that from $Al$ to $Ga$.

Statement $II$ : The d orbitals in Ga are completely filled.

In the light of the above statements, choose the most appropriate answer from the options given below

→
Which of the following species would be expected paramagnetic
→
The $\Delta H_f^o$ for $CO_2 (g), CO(g)$ and $H_2O (g)$ are $-393.5, -110.5$ and $-241.8\, kJ\, mol^{-1}$ respectively. The standard enthalpy change (in $kJ$) for the reaction $CO_2 (g) + H_2 (g) \to CO (g) + H_2O (g)$ is
→
Which of the following expression for an irreverssible process.
→