List of practice Questions

The upper end of a wire of length 5 m is fixed to the ceiling and a 20 kg mass is attached at its lower end. If the wire makes an angle $60^\circ$ with the horizontal, then the moment of force due to gravity to the upper end of the wire is: (Acceleration due to gravity = 10 m s$^{-2}$)

A machine gun with power 15 kW can fire 360 bullets per minute. If the mass of each bullet is 5 g, then the velocity of the bullets is:

Match the following.

List–I	List–II
A) Attenuated whole agent vaccine	I. Polio
B) Inactivated whole agent vaccines	III. Measles
C) Toxoids	IV. Diphtheria
D) $p^{53}$ protein	II. Guardian angel of genome

Tall T-wave of ECG indicates

This hominoid is more ape like.

Assertion (A): Genetic drift tends to reduce the amount of genetic variation within the population.
Reason (R): In genetic drift alleles with low frequencies are removed in a population.

Cystic fibrosis is characterised by

The Karyotype AA + XXY leads to

Study the following regarding human genome project and identify the correct statements:
I. The largest known human gene is located on X-chromosome.
II. Chromosome 1 has the lowest number of genes.
III. Less than 2 percent of the genes code for proteins.
IV. The human genome contains 3164.7 billion nucleotide bases.

O-group child cannot have parents of following blood groups.

Infertility due to low sperm count can be rectified by the following Assisted Reproductive Technique.

This hormone involves in ovulation.

Assertion (A): Colostrum is essential to protect the new-born baby from initial sources of infections.
Reason (R): Colostrum contains several antibodies (especially $I_g$ - A type).

Part of antigen that binds to the specific part of antibody is called

Cells primarily involved in humoral immunity are

Pick up the mononuclear phagocyte.

Match the following hormones with their corresponding disorders:

Hormone	Disorder
A) Thyroxine	I. Addison's disease
B) Vasopressin	II. Diabetes mellitus
C) Glucocorticoids	III. Acromegaly
D) Somatotropin	IV. Myxedema
	V. Diabetes insipidus

S.No.	Cranial nerves	Arises from ...	Ends in ...
I.	Olfactory nerves	Olfactory epithelium of nasal chambers	Temporal lobes of cerebrum
II.	Optic nerves	Retina of eyes	Cerebellum
III.	Auditory nerves	Internal ears	Cerebrum
IV.	Pathetic nerves	Floor of mid brain	Superior oblique muscle of eye ball

Table 1: List of Cranial Nerves: Their Origins and End Points

Match the following:

List–I	List–II
A. Ball and socket joint	I. Inter carpal joint
B. Hinge joint	II. Between humerus and Pectoral girdle
C. Pivot joint	III. Between carpals and metacarpals
D. Gliding joint	IV. Between atlas and axis
	V. Knee joint

These structures of human heart are functional in embryonic stage, but are non functional in adult stage.

Pick the incorrect match.

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:

The bacterium converts nitrites into nitrates.

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

Study the following statements regarding osmoregulatory adaptations in marine and freshwater fish and identify the correct statements:
Statements
I. Marine fishes actively excrete excess salt through their gills.
II. Freshwater fishes have glomerular kidneys.
III. Marine fishes face the problem of exosmosis.
IV. Freshwater fishes have salt-excreting chloride cells.