NSO - Mock Test - 3

A and B are siblings.
E is the wife of F.
D is the son of E.
If B is the daughter of F, it means B is the daughter of E also.

The series is as follows:
1⁴ = 1
2⁴ = 16
3⁴ = 81
4⁴ = 256
5⁴ = 625

The code is as follows:
B – 1 = A
R + 1 = S
A – 1 = Z
K + 1 = L
E – 1 = D
So, in the same way, STONE will be written as:
S – 1 = R
T + 1 = U
O – 1 = N
N + 1 = O
E – 1 = D

The relation is as follows:-
M + 3 = P
N + 4 = R
O + 5 = T
In the same way,
S + 3 = V
T + 4 = X
U + 5 = Z

Except 969, all the other numbers are perfect squares.
21² = 441
23² = 529
27² = 729
29² = 841

According to the question,
Green = Blue
Black = Red
White = Yellow
Purple = Orange
The colour of grass is green, and of mango is yellow. 

Horticulture is the art of growing fruits, vegetables and ornamental plants.

Bacteria are used for nitrogen fixation. Some of the soil bacteria, like azotobacter, clostridium and symbiotic bacteria, are capable of fixing free atmospheric nitrogen into nitrates. These nitrates are used by green plants to produce proteins.

The process of linking together small monomers to form polymers is called polymerisation.

According to inertia of motion - 'If a body is in state of uniform motion, it continues to remain in the same state unless an external force acts on it.'

Copper, aluminium and silver are very good conductors of electricity and heat, whereas, tungsten has a very high resistivity. So, it is a bad conductor of electricity and heat.

A substance that burns on subjection to heat is combustible.
Magnesium ribbon is a combustible substance.
All the other mentioned options are incombustible.

The species of plants and animals which are limited to particular zones are called endemic species. For example, kiwis and kangaroos are endemic to New-Zealand and Australia, respectively.

Shapes of racing cars and aeroplanes are designed to reduce the friction. This is called streamlining.

Wave is the disturbance travelling in a medium which is created by the vibrations of the medium particles. If the medium particles are vibrating perpendicular to the direction of propagation of the wave, then it is called a transverse wave. If the medium particles are vibrating to and fro along the direction of propagation of the wave, it is called a longitudinal wave.

Both, squeezing of a plastic bottle, and pressing clay between the hands changes the shape of objects.

Study of earthquakes is called seismology.

A light year is the distance travelled by light in one year. The speed of light is 300,000 km/s.Therefore, one light year is about 9.5 million kilometres.

India sent its first Earth satellite Aryabhatta on 19^th April, 1975.

Excessive growth of algae in the water bodies is called eutrophication.

Eutrophication is the natural ageing of a lake by nutrient enrichment of its water. In a young lake, the water is cold and clear, supporting little life. With time, streams draining into the lake introduce nutrients such as nitrogen and phosphorus, which encourage the growth of aquatic organisms. As the lake's fertility increases, plant and animal lives burgeon, and organic remains begin to be deposited on the lake bottom. Over the centuries, as silt and organic debris pile up, the lake grows shallower and warmer, with warm-water organisms supplanting those that thrive in a cold environment. Marsh plants take root in the shallows and begin to fill in the original lake basin. Eventually, the lake gives way to large masses of floating plants (bog).

Our body produces antibodies to fight the invader when a disease-carrying microbe enters into it.

Mycelium is the vegetative part of a fungus or fungus-like bacterial colony, consisting of a mass of branching, thread-like hyphae.

The tensile strength of a material is the maximum amount of tensile stress that it can take before breaking or snapping under the effect of the applied force.
Nylon has the maximum tensile strength which is greater than even a steel wire.

A nuclear force is a force that exists only if the interacting particles are protons or neutrons or both.

Graphite is mixed with fine clay and made into dough, from which spaghetti like strings are drawn. These strings are termed as pencil lead and the pencil as lead pencil.

Coal, when processed in industry, gives coke, coal tar and coal gas.

A chemical process in which a substance reacts with oxygen to produce oxides and release energy is called combustion. Rapid combustion is a form of combustion in which large amounts of heat and light energy are released, which often results in a flame. Burning of paper is an example of rapid combustion without sound.

Ministry of Environment and Forests (MEF) initiated "Project Tiger" in 1973, funded by the World Wildlife Fund (WWF) for preservation of tigers in India.

All cells are enclosed in a thin membranous wall which is called cell membrane. In plants, there is an additional wall outside the cell membrane which is called cell wall. Cell wall is made primarily of cellulose.

Catching a ball with a higher velocity is more difficult as compared to catching a ball which is moving with low velocity. We see that moving bodies possess a physical quantity associated with their motion which determines how much force is required to bring them to rest. This quantity depends on the mass and velocity of the moving body, which is called 'momentum'. So, lesser the weight of the object, lesser will be its momentum.

In binary fission, the division of the parent body into two halves takes place to produce two daughter cells. The nucleus and the cytoplasmic contents divide into smaller-sized daughter individuals.

Sound propagates in the form of mechanical waves, so it requires a material medium to propagate.

The focus is the point of origin of an earthquake inside the earth.

When light travels from one transparent medium to another, a change in the wavelength of the light occurs. This is due to change in the optical density considered with reference to the motion of the light in the medium, which is also called refractive index of the medium.

Astronomers believe that the origin of the universe can be explained by the Big Bang Theory. At the time of the Big Bang, there was a gigantic explosion, which formed atoms, then molecules, then eventually nebulae. All the matter in the universe occupied a singe point till the explosion, after which it began its explosive expansion.The universe is still expanding.

The accumulation of harmful chemicals in the body of living organisms is called bio-concentration.

Zaid crops are sown in March/April and harvested before rainy season. Most crops are vegetables and fruits like cucurbits, gourd, bitter gourd etc.

Irradiation is a modern method of food preservation. By the term irradiation, we mean the process of exposing the food material to high energy radiation. The food material to be preserved is exposed to gamma rays or x-rays. These powerful radiation completely destroy the harmful micro-organisms present in the food material.

The properties of solids are as follows:-
At room temperature, all the metals are solid except mercury which is a liquid.
Sodium and potassium are metals and are soft like wax.
Metals have a brilliant shine showing a metallic lustre.
Metals are ductile.
Metals can be drawn into very thin wires.
Hence, (i), (ii), (iii) and (v) are the correct properties.
The statement (iv) is incorrect because metals are malleable and can be beaten into sheets.