NSO - Mock Test - 1

The series is going up in powers of 3.
5 + 3¹ = 8
8 + 3² = 17
17 + 3³ = 44
44 + 3⁴ = 125
125 + 3⁵ = 368

BRAKE is coded as DUEPK as follow:-
B + 2 = D
R + 3 = U
A + 4 = E
K + 5 = P
E + 6 = K

In the same way ACTOR will be coded as CFXTX as follow:
A + 2 = C
C + 3 = F
T + 4 = X
O + 5 = T
R + 6 = X

The relation between KIFG and ODJB is as follow:-
K + 4 = O
I - 5 = D
F + 4 = J
G - 5 = B

So the missing term will be LMXI as follow:-
H + 4 = L
R - 5 = M
T + 4 = X
N - 5 = I

In translational motion, every particle of the body has the same displacement. It can be along a straight line or a curved path. The motion along a straight line is called rectilinear motion and the motion along a curved path is known as curvilinear motion.

The distance traveled by boys is ( velocity of boy X time ) + (1/2)at²
Horizontal distance traveled by boy = ( velocity of boy X time )
Difference is distance = ( velocity of boy X time ) + (1/2)at² - ( velocity of boy X time )
= (1/2)at²
= (1/2)2(1)²
= 1 m
The distance traveled by boy is 1 m more than the ball hence, the ball will fall 1m behind the boy.

Velocity of an object is the distance covered in a particular direction in unit time.
If a vehicle is moving on a circular path with uniform speed, then its motion is said to be non-uniform because on a circular path, the direction of moving body changes along with the direction of curve.

Force (F) = 24N
Mass (m) = 4 kg
Acceleration (a) = Not given
According to Newton's second law of motion, F = m x a
24 = 4 × a
a = 24/4
a = 6 m/s²

Chlorofluorocarbons are chemically inactive and don't dissolve in rain water. Hence they reach the stratosphere over a period of time.

Calorie is defined as the amount of heat energy required to raise the temperature of one gram of pure water from 14.5^oC to 15.5^oC.

If the direction of vibration of the particles of the medium is perpendicular to the direction of wave motion such a wave is called transverse wave.
Properties of transverse waves are as follow:-

Transverse waves propagate in the form of crests and troughs.
There is no difference in pressure created in the medium while the wave propagates.
These waves can pass through solids and of surface of liquids only, as the propagation of these waves causes change in the shape of the medium.

Sublimation is a process during which a solid on heating, changes directly into the vapor phase without passing through the intermediate liquid state.

Perfumes are volatile liquids and vaporise quickly when the bottle is opened. In the gaseous state they spontaneously move from their higher to lower concentration till a uniform composition is obtained.

The rate of evaporation decreases, with increase in humidity. Humidity is defined as the amount of water vapor present in air. At a particular temperature, the air cannot hold more than a definite amount of water vapor. Thus, a higher humidity in air causes the rate of evaporation to decrease.

A pure substance consists of a single type of particles having the same chemical nature.
Elements like iron, and compounds like hydrochloric acid and calcium oxide are all pure substances.

Milk, however, is a mixture of several substances, such as water, sugar, fat, protein etc. It is an impure substance because the constituent particles are chemically different.

The Rutherford's Model of Atom is as follows:

1.Most of the part in an atom is empty.
2.There is a positively charged center in atom, which contains nearly the entire mass of the atom. The centre is called nucleus.
3. The radius of the nucleus is very small as compared to that of the atom.
4. Electrons revolve round the nucleus.

However, the concept discreet energy levels around the nucleus, where an atom can be, was given by Bohr, in order to explain the stability of the atom. It is not a postulate of Rutherford's atomic model.

Isobars are atoms that have the same mass number but different atomic numbers.
They have different atomic numbers because they have different numbers of protons and represent different elements.
Mass number is the total number of nucleons (protons + neutrons) and is the same for isobars.

Isotones have the same number of neutrons.
Isotopes have the same number of protons.
Isoelectronic species have the same number of electrons.

A cell consists of an organised mass of protoplasm surrounded by a selectively permeable covering which is known as plasma membrane or cell membrane. It is a biological membrane that separates the interior of all cells from the outside environment.

The organisms whose cells lack a nuclear membrane are called prokaryotic cells. These cells have primitive organisation of genetic material which is called nucleoid.

Golgi apparatus was first described by Camillo golgi. Golgi apparatus consists of a system of membrane-bound vesicles which are arranged somewhat parallel to each other in stacks called cisterns.The Golgi body has a number of functions, including sorting and processing of proteins. Proteins are synthesized in the rough endoplasmic reticulum, then they travel to the Golgi body.

Meristem is a region of plant tissue, found chiefly at the growing tips of roots and shoots and in the cambium, consisting of actively dividing cells forming new tissue. Apical meristem is found at the apices of the stem, root and their branches

Companion cells lie on the sides of the sieve tubes and are closely associated with them. Each companion cell is usually closely associated with a sieve element. Its function is to regulate the activity of the adjacent sieve element and to take part in loading and unloading of sugar into the sieve elements.

Genus - A taxonomic category ranking used in biological classification that is below a family and above a species level, and includes group(s) of species that are structurally similar or phylogenetically related.

There are five kingdoms. Kingdom plantae includes all organisms which are truly multi cellular and photosynthetic.

Acute diseases include a very rapid onset and/or a short course. Strep throat is an acute disease. All the other are chronic diseases.

Leukaemia is a cancer which starts in blood-forming tissue, usually the bone marrow. It leads to the over-production of abnormal white blood cells, the part of the immune system which defends the body against infection.

Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.

Hybridisation can be defined as the method of producing new crop varieties by crossing two genetically different parents.

The term "blue revolution" refers to the remarkable emergence of aquaculture as an important and highly productive agricultural activity. Aquaculture refers to all forms of active culturing of aquatic animals and plants, occurring in marine, brackish, or fresh waters.