List of practice Questions

Which of the following hormones can replace vernalisation?
What will be the ratio of the distance moved by a freely falling body from rest in $4^{th}$ and $5^{th}$ seconds of journey ?
Lassaigne?s test is used in qualitative analysis to detect
A current of 2 A, passing through a conductor produces 80 J of heat in 10 seconds. The resistance of the conductor in ohm is
The substrate for photorespiration is
The causal organism for African sleeping sickness is
'Origin of Species' was written by
250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is lifted to 3m, the efficiency of pulley system will be : -
Which of the following electromagnetic radiations have the longest wavelength ?
A black body has maximum wavelength 1 m at 2000 K. Its corresponding wavelength at 3000 K will be
Soil conservation is
Theory of inheritance of acquired characters was given by
Polyribosomes are aggregation of
\(K_1\) and \(K_2\) are equilibrium constant for reactions (i) and (ii) 
(i) \(N_2 ( g ) + O_2 ( g ) \leftrightharpoons 2 NO ( g)\)
(ii) \(NO ( g ) \leftrightharpoons \frac{1}{2} N_2 ( g ) + \frac{ 1}{ 2} O_2 ( g )\).Then,
A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of $12 ms^{-1}$. If the mass of the ball is 0.15 kg, the imparted to the ball is
Histamine secreting cells are found in
Arteries carry oxygenated blood except
The average binding energy of a nucleon inside an atomic nucleus is about
The age of most ancient geological formation is estimated by
Out of diffuse porous and ring porous woods, which is correct?
The de Broglie wave corresponding to a particle of mass m and velocity v has a wavelength associated with it
If the amplitude of sound is doubled and the frequency reduced to one fourth, the intensity of sound at the same point will be
Generative cell was destroyed by laser but a normal pollen tube was still formed because
The size of chlorophyll molecule is
Plasmamembrane is made of