3.
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent to e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
4.
In which of the following compounds, -OH is the functional group?
5.
While cooking if bottom of the vessel is getting blackened in the outside, it means that
6.
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
9.
A molecule of ammonia (NH3) has
10.
Ethanol reacts with sodium and forms two products. These are
11.
Carbon exists in the atmosphere in the form of
13.
Chlorine reacts with saturated hydrocarbons at room temperature in the
14.
Mineral acids are stronger acids than carboxylic acids because (i) mineral acids are completely ionised (ii) carboxylic acids are completely ionised (iii) mineral acids are partially ionised (iv) carboxylic acids are partially ionised
15.
The first member of alkyne homologous series is
16.
Buckminster fullerene is an allotropic form of
17.
Butanone is a four carbon compound with functional
18.
Which of the following does not belong to the same homologous series?
19.
Identify the unsaturated compounds from the following (i) Propane (ii) Propene (iii) Propyne (iv) Chloropropane
20.
Which of the following statements are usually correct for carbon compounds? These (i) Are good conductors of electricity (ii) Are poor conductors of electricity (iii) Have strong forces of attraction between their molecules (iv) Do not have strong forces of attraction between their molecules
