List of practice Questions

Stomatal mechanism operates in response to

Cycos circinalis is source of

Protonema stage is found in

Quiescent centre is found in

Essential requirement for seed germination are

Aleurone layer is part of

A candle of diameter $d$ is floating on a liquid in a cylindrical container of diameter $D (D > > d)$ as shown in figure. If it is burning at the rate of $2$ cm/hour then the top of the candle will

A bullet is fired from the gun with a speed of 1000 $ms^{ -1}$ in order to hit a target s = 100 m away. At what height above the target should by gun be aimed? (The resistance of air is neglegible and g = 10 $ ms^{ - 2}$

A satellite launch station should be

A body of mass m is accelerated uniformly from rest to a speed $v$ in a time $T$. The instantaneous power delivered to the body as a function of time, is given by :

At the height $80\, m$ , an aeroplane is moved with $150\,m/s$. A bomb is dropped from it so as to hit a target. At what distance from the target should the bomb be dropped? (given $g=10\,m/s^{2}$)

A stone thrown at an angle $ \theta $ to the horizontal reaches a maximum height $H$ . Then the time of flight of stone will be

Near and far points of human eye are

An object accelerates from rest to a velocity $27.5\,m/s $ in $10\,\sec $ then the distance covered in next $ 10\,\sec$ is

A man having height $6\, m$, observes image of $2\, m$ height erect, then mirror used is

A body is moving along a rough horizontal surface with an initial velocity $6\, ms^{-1}$ If the body comes to rest after travelling a distance $9\, m$, then the coefficient of sliding friction will be

A block is kept on a frictionless inclined surface with angle of inclination '$\alpha$'. The incline is given an acceleration a to keep the block stationary. Then a is equal to :

In cockroaches during the digestion of food, the enzyme cellulase is synthesised by

Which of the following is responsible for blood clotting (coagulation) ?

Which of the following is a water borne disease ?

Which of the following digest proteins into peptides ?

If $C$ is the mid point of $AB$ and $P$ is any point outside $AB$, then :

Let $P$ be the point $(1, 0)$ and $Q$ a point on the locus $y^2 = 8x$. The locus of mid point of $PQ$ is:

The value of $a$ for which the sum of the squares of the roots of the equation $x^2 - (a - 2) x - a - 1 = 0$ assume the least value is

Let $\alpha$ and $\beta$ be the distinct roots of $ax^2 + bx + c = 0$ , then $\displaystyle \lim_{x \to\alpha} \frac{1- \cos \left(ax^{2} + bx + c\right)}{\left(x-\alpha\right)^{2}} $ is equal to