List of practice Questions

Which test is performed to identify the presence of starch in leaves?

In the mouth, the crushed food mixed with saliva which forms a slippery lump is called?

Which of the following statement is true?

Each ATP molecule gives how much energy?

................ causes ripening of fruits.

Majority of flowering plants have an embryo sac consisting of:

The correct order of passage of spermatozoa is:

The walls of the food pipe secrete a slippery substance called:

From the stomach, the partially digested food (chyme) is released into:

The phenotypic ratio of F2 generation in a monohybrid cross is:

The number of allosomes in human cells are:

Occurrence of vestigial organs abruptly in human beings is called:

The process of entry of pollutants into a food chain is known as:

On increasing the temperature of a conductor, its resistance increases because

When light wave passes from a medium of refractive index $ \mu $ to another medium of refractive index $ 2\mu $, the phase change occurs to the light is:

Which of the following statement is true regarding the centre of mass of a system?

An ideal diode is connected in series with a capacitor. The free ends of the capacitor and the diode are connected across a 220 V ac source. Now the potential difference across the capacitor is:

A coil offers a resistance of 20 ohms for a direct current. If we send an alternating current through the same coil, the resistance offered by the coil to the alternating current will be:

The current through a conductor is $ a $ when the temperature is 0°C. It is $ b $ when the temperature is 100°C. The current through the conductor at 220°C is:

Which of the following graph shows the variation of velocity with mass for the constant momentum?

The mass of a particle A is double that of particle B and the kinetic energy of B is $ \frac{1}{8} $ that of A. Then the ratio of the de-Broglie wavelength of A to that of B is: