List of practice Questions

The equation of projectile is $y = ax - bx^2$ where $a$ and $b$ are the constants. Its horizontal range is

Mark the correct option. If a ball is projected with velocity $ {{v}_{o}} $ at an angle of elevation 30?, then

The height $y$ and the distance $x$ along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by $y\, = \,(8t - 5t^2 )$ metre and $x = 6t$ metre, where $t$ is in second. The velocity of projection is

Identify the incorrect statement from the following:

Oxyntic cell produces

Taxonomic hierarchy refers to

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

Family is placed between

Which of the following is not an example of perfectly inelastic collision?

Scientific study of diversity of organisms and their evolutionary relationships is

Water is flowing continuously from a tap having an internal diameter $8 \times 10^{-3} m$. The water velocity as it leaves the tap is $0.4 ms ^{-1}$. The diameter of the water stream at a distance $2 \times 10^{-1} m$ below the tap is close to

The end of fragments of DNA molecules are sticky due to

$bcc$ and $hcp$ has same packing efficiency. Both have same number of atoms per unit cell and same arrangement.

The aggregate fruit is formed from

Asthma is characterised by

Stratified epithelium is found in

Inflorescence of Liliaceae is

which of the following is a ketone body?

Neutron was discovered by

A glass rod rubbed with silk is used to change a gold leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to $X$-rays for a short period. Then

Compare the statement A and B. Statement: A Ethylene is a gas which acts as growth regulator of plants. Statement: B It is the most simple plant hormone.

Bombardment of aluminium by a-particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products X , Y and Z respectively, are

Two masses of 10 kg and 20 kg respectively are tied together by a massless spring. A force of 200 N is applied on a 20 kg mass as shown in figure. At the instant shown the acceleration of 10 kg mass is $ 12\text{ }m/{{s}^{2}}, $ the acceleration of 20 kg mass is

The correct decreasing order of $pK_b$ is