STANDARD Questions

Which of the following is correct about magnetic monopole?

What is the formal charge on carbon atom in the following two structures: :Ö: S = C = S: :Ö: :Ö: C :Ö: :Ö: ²⁻

In man, the urea is mainly produced in

Inertia is that property of a body by virtue of which the body is

In a Geiger-Marsden experiment. Find the distance of closest approach to the nucleus of a 7.7 MeV α-particle before it comes momentarily to rest and reverses its direction. (Z for gold nucleus = 79)

Who is considered as father of genetics

Which of the following represents the given sequence of hybridisation of carbon atoms from left to right sp², sp², sp, sp?

Highest growth is found in

This question contains Statement-1 and Statement-2 of the four choices given after the statements, choose the one that best describes the two statements. Statement-1: For a charged particle moving from point P to point Q, the net work done by an electrostatic field on the particle is independent of the path connecting point P to point Q. Statement-2: The net work done by a conservative force on an object moving along a closed loop is zero.

A real gas behaves like an ideal gas if its

The number of ions given by [Pt(NH₃)₆]Cl₄ in aqueous solution will be

Improved programmes covering wider reproduction related areas are currently in operation under the popular name _______ programmes

Bacteria and fungi in a forest ecosystem are generally

Match column I with column II.

Which one of the following reducing agents is likely to be most effective in bringing about the following change? R−C−NH₂

A reaction is said to be in equilibrium when

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): With the help of several ommatidia, a cockroach can perceive several images of an object, i.e., mosaic vision. Reason (R): Mosaic vision gives more sensitivity but less resolution. In the light of the above statements, choose the most appropriate answer from the option given below:

The efferent process of neuron is known as

Which of the following is not an ore of aluminium?

Which of the following is a primary halide?

Which one of the following is a 'd-block element'?

Homogeneous mixture of two or more than two components is called

The (x, y, z) coordinates of two points A and B are given respectively as (0, 4, −2) and (−2, 8, −4). The displacement vector from A to B is

The general formula of carbohydrates is

Which of the following is unitless quantity?

Which of the following conversions is correct?

Which of the following group of animals reproduces only by sexual means?

Wavefront is the locus of all points, where the particles of the medium vibrate with the same

During electrophoresis, DNA fragments move towards the

The temperature which has same numerical value on Celsius and Fahrenheit scale is

Which one of the following aspects is an exclusive characteristic of living things

Macrophages and Leucocyte exhibit :-

Difference between the prokaryotic and eukaryotic cells in having

Out of the following representing motion of a particle which represents SHM? 1. x = sin³ωt 2. x = 1 + ωt + ω²t² 3. x = cosωt + cos3ωt + cos5ωt 4. x = sinωt + cosωt

The cell reaction of the galvanic cell : Cu(s)|Cu²⁺(aq)||Hg²⁺(aq)|Hg(l) is

Membrane-bound organelles are absent in

The centre of mass of a body

The nucleus of helium contains

Which of the following statements is not true?

Identify the basic amino acid from the following.

Which of the following carbonyl compounds is most polar?

Which stage connecting link between Meiosis I and Meiosis II in

Match the items given in column I with those in column II and select the correct option given below.

For every one ³⁷Cl isotope there are three ³⁵Cl isotopes in a sample of chlorine. What will be the average atomic mass of chlorine?

A cup contains 250 g of water. Find the total positive charge present in the cup of water.

In man and mammals, air passes from outside into the lungs through

The current in a wire varies with time according to the equation I = 4 + 2t, where I is in ampere and t is in second. The quantity of charge which has to be passed through a cross-section of the wire during the time t = 2 s to t = 6 s is

The number of images formed by the lens, if an object is placed on the axis of the lens is:

Which of the following statements is incorrect?

The majority charge carriers in P-type semiconductor are