List of top Questions asked in NEET (UG)- 1989

Mango juice is obtained from
A metal oxide has the formula $M_2O_3$. It can be reduced by $H_2$ to give free metal and water. $0.1596\, g$ of $M_2O_3$ required 6 mg of $H_2$ for complete reduction. The atomic mass of the metal is
Fish which can be used in biological control of mosquitoes/Larvicidal fish is
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
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
Curie is a unit of
'Continuity of germplasm' theory was given by
It is possible to obtain oxygen from air by fractional distillation because
\(K_1\) 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,
Bleaching powder reacts with a few drops of conc. HCI to give
The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon are
Oxygen will directly react with each of the following elements except?
Which one has the lowest boiling point?
When orthophosphoric acid is heated to 600$^{\circ}$C, the product formed is
Each of the following is true for white and red phosphorus except that they
A small object of uniform density rolls up a curved surface with an initial velocity v. It reaches up to a maximum height of $\frac{3v^2}{4g}$ with respect to the initial position. The object is
A solid cylinder of mass $M$ and radius $R$ rolls without slipping down an inclined plane of length $L$ and height $h$. What is the speed of its centre of mass when the cylinder reaches its bottom -
Acetylenic hydrogens are acidic because
Arteries carry oxygenated blood except
Artificial system of classification was first used by
The number of oxygen atoms in $4.4\, g$ of $CO_2$ is,
Correct gas equation is
Egg is liberated from ovary in
Energy in a current carrying coil is stored in the form of
Eutherians are characterised by