1) Ethane is sp3 hybridized molecules and has ---- bond angle
190.5o✓✓✓
90.5o
120.5o
45.5o

2) CH3COCH3 stands for ------
Acid
Ester
Alcohol
Ketone✓✓✓

3) A functional group in a molecule exhibits characteristic ------
Chemical properties✓✓✓
Odour change
Physical properties
Colour change

4) HCHO is an organic compound popularly known as ------
Methanoic acid
Formic acid
Formaldehyde✓✓✓
Ethanal

5) In the hybrids orbitals, as the s character increase, bond length -------
Weakens
Increase
Decrease✓✓✓
Stabilize

6) Ar-OH stands for ------- functional group
Ester
Aldehyde
Ketone
Phenol✓✓✓

7) RNH2 stands for class of compound called --------
Amines✓✓✓
Amides
Esters
Aromatics

8) Diethylether is correctly represented by the formula
CH3CH2OCH2CH3✓✓✓
CH3CH2CH3CH2
CH3OCH2CH3
CH3OCH3

9) RCHO stands for ----- functional group.
Ester
Ketone
Aldehyde✓✓✓
Alcohol

10) 180o bond angle is characteristic of ------ molecules
Oxidized
Sp3 hybridized
Sp hybridized✓✓✓
Sp2 hybridized