Standard Books Questions

The dough kept overnight in warm weather becomes soft and spongy because of

A reaction is said to be in equilibrium when

Match column I with column II.

Identify the basic amino acid from the following.

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

Receptors for protein hormones are located

The transfer of sperms into female genital tract is called as ________.

Red data book provides data on

Alternating current cannot be measured by DC ammeter because

Which of the following is a primary halide?

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 and mammals, air passes from outside into the lungs through

Fermentation takes place

Membrane-bound organelles are absent in

Macrophages and Leucocyte exhibit :-

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

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)

Phloem in gymnosperms lacks

The centre of mass of a body

Which of the following conversions is correct?

The general formula of carbohydrates is

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

Chargoff's rule states Or Which one of the following ratio is constant in DNAs of different species

The nucleus of helium contains

Displacement current goes through the gap between the plates of a capacitor when the charge on the capacitor

Bacteria and fungi in a forest ecosystem are generally

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

During electrophoresis, DNA fragments move towards the

Which stage connecting link between Meiosis I and Meiosis II in

"Two systems in thermal equilibrium with a third system separately are in thermal equilibrium with each other." This statement is

Which of the following is correct about magnetic monopole?

The number of chain isomers possible for hydrocarbon C₅H₁₂ is

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

Which of the following is unitless quantity?

Choose the wrong statement regarding AIDS

Agar-Agar is obtained from

Which of the following carbonyl compounds is most polar?

For a reaction, P + Q → 2R + S. Which of the following statements is incorrect?

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.

Highest growth is found in

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

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

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

The majority charge carriers in P-type semiconductor are

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

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

Ultrasonic waves produced by a vibrating quartz crystal are

Which of the following options is true?

Which of the following statements is incorrect?

Nucleons are