NEET 2017 Question Paper

Which of the following is made up of dead cells

The vascular cambium normally gives rise to

Alexander Von Humbolt described for the first time :

Which one of the following is related to Ex-situ conservation of threatened animals and plants?

The region of Biosphere Reserve which is legally protected and where no human activity is allowed is known as :

The heating of phenyl–methyl ethers with HI produces

An example of a sigma bonded organometallic compound is :

Which of the following pairs of compounds is isoelectronic and isostructural ?

Which one is the wrong statement ?

It is because of inability of ns2 electrons of the valence shell to participate in bonding that:-

Suppose the charge of a proton and an electron differ slightly. One of them is – e, the other is (e + ∆e). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then ∆e is of the order of [Given mass of hydrogen mh = 1.67 × 10-–27 kg]

A physical quantity of the dimensions of length that can be formed out of c, G and e24πε0is [c is velocity of light, G is universal constant of gravitation and e is charge] :-

Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are K1 and K2. The thermal conductivity of the composite rod will be :-

Young's double slit experment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly :-

Two blocks A and B of masses 3 m and m respectively are connected by a massless and 1nextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively :-