The focal length of a plane mirror is:

A convex mirror is used as a rear‑view mirror in vehicles because:

A concave mirror forms a real, inverted and same‑size image of an object. Where is the object placed?

Power of a lens is measured in:

A convex lens of focal length 20 cm has power:

The phenomenon responsible for twinkling of stars is:

The splitting of white light into its component colours by a prism is called:

When light passes from a denser medium to a rarer medium, it:

The colour of sky appears blue due to:

In which of the following is total internal reflection used?

The general formula of alkanes is:

Methane is the main component of:

The compound with functional group –OH is called:

The IUPAC name of CH3–CH2–OH is:

Which of the following is an unsaturated hydrocarbon?

The process of conversion of vegetable oils into fats using hydrogen is called:

The functional group present in acetic acid is:

Which gas is evolved when sodium reacts with ethanol?

The term “catenation” refers to the ability of carbon to:

Which of the following is a heteroatom in organic compounds?

Which one of the following is used in the manufacture of soaps?

The IUPAC name of CH3–COOH is:

Denatured spirit mainly contains ethanol mixed with:

Which of the following statements about carbon compounds is correct?