List of practice Questions

A particle is executing simple harmonic motion with amplitude \( A \). The ratio of the kinetic energies of the particle when it is at displacements of \( \frac{A}{4} \) and \( \frac{A}{2} \) from the mean position is:

The enthalpy change (ΔH) for the reaction N₂(g) + 3H₂(g) → 2NH₃(g) is -92 kJ/mol.

What is the enthalpy change for the decomposition of 1 mol of NH₃(g) into its elements?

Match the following pollutants with their corresponding control methods.

Pollutants Control
A) Particulate matter I) Catalytic converter
B) Carbon monoxide II) Scrubber
C) Sulphur dioxide III) Incinerators
D) Hospital wastes IV) Electrostatic precipitator

Assertion (A): Gastric juice plays an important role in absorption of vitamin B12.
Reason (R): Gastric juice contains Castle’s intrinsic factor.
Identify the correct option from the following:

If an electric generator produces a potential difference of \(180\,{kV}\) in a spark of length \(9\,{cm}\), then the maximum electric field generated is:

The \(E^\circ_{{M}^+_{(aq)}}/{M}_{(s)}\) is highest with negative sign for alkali metal 'x' and lowest with negative sign for alkali metal 'y'. In flame test, the characteristic colours of 'x' and 'y' are respectively:

Choose the correct statements among the following
I) Pasteur given the name virus.
II) Lichen are good pollution indicators.
III) Three Domain groups were originated from progenote.
IV) Chrysophytes belongs to Monera.

Choose the correct statements among the following

I) Fatty acids are broken down to acetyl CoA before entry into respiratory pathway.
II) The F₁ component of ATPase is integral membrane protein complex.
III) Hans Krebs elucidated the tricarboxylic acid cycle.
IV) All living organisms retain the enzymatic machinery to partially oxidise glucose.

Match the following:

List-I		List-II
A.	Nitzschia	I.	Plankton
B.	Certia	II.	Neuston
C.	Notonecta	III.	Nekton
D.	Hydra	IV.	Periphyton

The following are the layers of the wall of veins. Arrange them in correct sequence from outer side to inner side.
(included in question content)
(I) Endothelium
(II) Elastic lamina
(III) Smooth muscles
(IV) Fibrous tissue layer

Study the following and pick up the correct combinations:

S.No.	Spinal nerves	No. of pairs in man	Location
I	Cervical nerves	7 pairs	Neck region
II	Thoracic nerves	12 pairs	Thorax
III	Sacral nerves	5 pairs	Lumbar region
IV	Coccygeal nerves	1 pair	Caudal region

Assertion (A): Lipids are not true Biomacromolecules.
Reason (R): The molecular weight of lipids is less than 800 Daltons.

Choose the incorrect statement among the following

Statement I : Ammonia is highly toxic and needs more water for elimination and therefore excretion of ammonia is more common in aquatic animals.
Statement II : Urea is synthesised in kidneys.
Identify the correct option from the following

Match the following:

This vaccine is a toxoid.

A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into another circular orbit of radius 1.01 R around the earth. The period of revolution of the second satellite is larger than that of the first one by a percent of (approximately)

If four moles of hydrogen and two moles of helium form a gaseous mixture, then the molar specific heat capacity of the mixture at constant pressure is

If the maximum amplitude of a modulated wave is three times its minimum amplitude, then the modulation index of the wave is

Choose the correct statements among the following:
1. White spots on leaves are due to Puccinia.
2. Mycelium with multinucleated cytoplasm is called coenocytic.
3. Bacteria produce endospores under unfavourable conditions.
4. Gonyaulax release toxins to kill fish.
Identify the correct option from the following:

Match the following

List - I	List - II
A. Ori	IV. Controlling the copy number of linked DNA
B. Selectable marker	III. Permitting the growth of transformants
C. Cloning site	II. Single recognition site to link alien DNA
D. Cloning vector	I. Low molecular weight

Which one of the following is not involved in the regulation of respiration?