List of practice Questions

In a Fresnel biprism experiment, the two positions of lens give separation between the slits as 16 cm and 9 cm, respectively. What is the actual distance of separation?

Two particles execute SHM of the same amplitude and frequency along the same straight line. If they pass one another when going in opposite directions, each time their displacement is half their amplitude, the phase difference between them is

During photorespiration, the oxygen consuming reaction(s) occur in -

The length of one turn of the helix in a $B$- form DNA is approximately-

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

Two strings with mass per unit length of $25 \, g \, cm^{-1}$ and $9 \, gcm^{-1}$ are joined together in series. The reflection coefficient for the vibration waves are

The contractile protein of skeletal muscle involving ATPase activity is-

Crop plants grown in monoculture are -

Treatment of seed at low temperature under moist conditions to break its dormancy called

Peat moss is used as a packing material for sending flowers and live plants to distant places because

Pineapple (ananas) fruit develops from:

Which of the following statements regarding mitochondrial membrane is not correct?

A photocell employs photoelectric effect to convert :-

Maximum amount of oxygen is exchanged from the blood in the

The moment of inertia of a uniform circular disc of radius $R$ and mass $M$ about an axis touching the disc at its diameter and normal to the disc is :

The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm the potential energy stored in it is

What is the potential drop between points A and C in the following circuit ? Resistances $1 \, \Omega $ and $2 \, \Omega $ represent the internal resistances of the respective cells.

The binding energy of deuteron is 2.2 MeV and that of $^4_2$He is 28 MeV. If two deuterons are fused to form one $^4_2He$ then the energy released is :-

$[NH(CH_2)NHCO(CH_2)_4CO]_{n}$ is a:-

Two microbes found to be very useful in genetic engineering are-

Moss peat is used as a packing material for sending flowers and live plants to distant places because:

Pineapple (ananas) fruit develops from-

A common structural feature of vessel elements and sieve tube elements is:

Triticale, the first man-made cereal crop, has been obtained by crossing wheat with :

Above Curie temperature :