List of practice Questions

If 25 cm each is the object and image distances due to convex lens, then its focal length is
The angle between paraxial rays and principal axis is
Splitting of white light into VIBGYOR colours is called
For a normal human-eye, 2.5 cm is the distance between
Three resistors each of 4 Ω, 0.4 Ω and 0.04 Ω are connected in series combination. Their equivalent resistance is
Pick the correct answer from the following two statements :
  1. Ohm's law is applicable to semiconductors.
  2. Ohm's law is applicable to metallic conductors.
The relationship between current and voltage is established by the scientist
The phenomenon of electromagnetic induction involves the process of
The magnetic force acting on a moving charge in a magnetic field is the product of three quantities namely
Faraday's laws of electromagnetic induction is a consequence of
Which one of the following can be used as acid-base indicator to detect acidic or basic nature of solution?
If pH of rain water is less than ____ ,then it is called acid rain.
Tooth enamel is made up of
The maximum number of electrons in M shell is
Which of the following orbitals does not exist?
Niels Bohr received Nobel Prize in
Strong ionic bond is formed between ____ and ____ group elements.
1s2, 2s2, 2p6, 3s2, 3p6 (2,8,8) configuration is related to
Lithium, sodium and ____ are Dobereiner's triads.
An element ‘X’ belongs to 2nd group and 3rd period. What is its valency?
Valance Bond Theory was proposed by
Identify the correct statement.
Linus Pauling proposed the concept of
Electronic configuration of O-2 ion is
Poling process is used to