Explore topic-wise InterviewSolutions in Current Affairs.

We know that Mrs Malik was a sociable lady because while supervising the construction of her new house, she developed friendly relations with people in the colony. It shows that she was a sociable lady. 

हम जानते हैं कि श्रीमती मलिक एक मिलनसार महिला थीं क्योंकि अपने नये मकान के निर्माण कार्य के निरीक्षण के दौरान उन्होंने उस कॉलोनी में लोगों से मित्रवत् सम्बन्ध बना लिये थे। यह प्रदर्शित करता है कि वह एक मिलनसार महिला थीं।

”But this is a store”. The architect explained to Mrs Malik. She explained her proposal to the architect again. The architect didn’t seem to understand her. He looked puzzled by her observation. 

“लेकिन यह (तो) एक भण्डारगृह है।” वास्तुशिल्पी ने श्रीमती मलिक को बताया। उन्होंने वास्तुशिल्पी को पुनः अपना प्रस्ताव बताया। वास्तुशिल्पी को शायद उनकी बात समझ में नहीं आई। वह उनकी बात सुनकर उलझन में पड़ गया।

The room size 10 x 8 was suggested by Mrs Malik to the architect hired to design the house. She said, “This room might be 10′ 8′, pointing to a square in the draft plan lying on the table before them. 

कमरे के 10 x 8 फीट के आकार का सुझाव श्रीमती मलिक द्वारा मकान निर्माण हेतु नियुक्त वास्तुशिल्पी को दिया गया था । उन्होंने कहा, ”यह कमरा 10 फीट x 8 फीट का हो सकता है ।” उन्होंने अपने सामने मेज पर पड़े हुए नक्शे के प्रारूप में एक वर्गाकार स्थान की ओर संकेत किया ।

Regarding a store-room, Mr Malik’s views were that the store-room should be a little bigger. If it is so, one can move about the trunks more freely. Then it is also more convenient to keep it tidy. 

भण्डारघर के विषय में श्रीमान् मलिक के विचार थे कि भण्डारघर को थोड़ा बड़ा ही होना चाहिए । यदि ऐसा होगा तो पेटियों-बक्सों को अधिक आराम से खिसकाया जा सकता है । तब इसे सुव्यवस्थित साफ व सुथरा रखना भी अधिक सुविधाजनक रहेगा ।

Brokerage is \(\frac{0.5}{100}\)× (1,10,000 – 90,000) 

= \(\frac{0.5}{100}\) × 20,000 

= Rs 100

No. of Shares = \(\frac{1,000}{5}\) = 200 

Amount received by selling 120 shares at 1400 = 120 × 1,400 = 1,68,000 

Amount received by selling 80 shares art 1,600 = 80 × 1,600 = 1,28,000 

∴ Total amount = 1,68,000 + 1,28,000 = 2,96,000 

∴ Number of shares purchased = \(\frac{29,6000}{1,184}\) = 250

Given, f(x) = x² - 5x + 6 in [2,3]

Since, f(x) being a polynomial function in x.

So, f(x) in differential and continuous every where.

So, f(x) is continuous in [2,3] and derivable is (2,3)

Also, f(2) = 0 an f(3) = 0

∴ f(2) = f(3) 

Hence, all the condition of Rolle's theorem are satisfied for f(x) in [2,3]

So, there exist C ∈ (2,3) such that f'(C) = 0

Here, f(x) = 2x - 5

So, f'(C) = 0 

2C - 5 = 0

C = 5/2

∴ C = 5/2 ∈ (2,3) such that f'(C) = 0

Hence, Rolle's  theorem verified.

Answer is (d) 2

(i) The three layers of the earth are:
* Crust
* Mantle
*Core
(ii) A rock is a natural mass of mineral matter that makes up the earth’s crust. Rocks can be of different colour, size and texture.
(iii) Three types of rocks are:
* Igneous rocks also known as primary rocks.
* Sedimentary rocks.
* Metamorphic rocks.

molten lava comes on the earth’s surface, it rapidly cools down and becomes solid. Rocks formed in this way on the crust are extrusive igneous rocks. Sometimes the molten magma cools down deep inside the earth’s crust. Solid rocks so formed are actually intrusive igneous rocks.
(v) One type of rock changes to another type under certain conditions in a cyclic manner. This process of transformation of the rock from one to another is known as the rock cycle. Let’s understand it through example—Igneous rocks change into sedimentary rocks. When the igneous and sedimentary rocks are subjected to heat and pressure, they change into metamorphic rocks. The metamorphic rocks which are still under great heat and pressure meet down to form molten magma. This molten magma again can cool down and solidify into igneous rocks.
(vi) Hard rocks are used for making roads, houses and buildings. Stones are used in many games, such as seven stones (pitthoo), hopscotch (stapu/kitkit), Five stones (gitti).
(vii) When the igneous and sedimentary rocks are subjected to heat and pressure they change into metamorphic rocks. For example, clay changes into slate and limestone into marble

The place in the crust where the movement starts is called the ‘focus’. The place on the surface above the focus is called the ‘epicentre’.

A volcano is a vent or opening in the earth’s crust through which molten material erupts suddenly

The earth’s crust consists of several large and some small, rigid, irregularly— shaped plates, Le., slabs which cany continents and the ocean floor.

(c) Red planet

Nile, Zaire, Ganga-Brahmaputra, Hwangotto, Murray Darling, Amazon, etc.

(b) Convergent

When the lithospheric plates move, the surface of the earth vibrates. The vibrations can travel all round the earth. These vibrations are called earthquakes. Some common earthquake prediction methods include studying animal behaviour, fish in the ponds get agitated, snakes come to the surface.

Correct answer is (a) Iron

Correct answer is (a) 70%

Erosion is the wearing away of the landscape by different agents like wind, water, and ice.

About 4.4 billion years ago, a celestial body of the size of the mars hit the earth which resulted in formation of the moon. The moon is the only natural satellite of the earth.

Correct answer is (d) Iron

Correct answer is (a) Earth

External forces which facilitate transport of substances from one place to another on earth are called erosion forces, e.g. moving air (wind), water (rivers) and ice (glaciers).

Significance of wind on human life:

• Wind causes changes in weather and thus affects our life in significant ways.
• Wind helps in navigation of ships.
• Wind energy is being harnessed to produce electricity.
• Wind changes the landform around us.

Significance of river:

• River changes the landform along its course.
• River has always played important role in development of human civilization and many great civilizations have flourished along rivers.
• River brings flood which may cause havoc.
• River serves as important channel for transport.

These forces continue their work inside the earth and are not apparent from outside. These forces come into origin because of expansion and contraction of rocks due to high temperature inside the earth. These forces also come into origin because of movement of hot molten magma. When the internal moulding forces work perpendicular to the layers of the earth, then some portions of the crust become elevated and some other portions of the crust move deeper. This results in formation of continents, islands, plateau, plain, sea, etc. on the surface. The sedimentary rocks formed inside the oceans, rise and reach the inner portions of the continents. When internal moulding forces work in horizontal direction then waves are formed.

These waves cause heavy shakeup of the rocks on the crust. These results in folds, prolapse, fissures on the surface, formation mountains and valleys.

Weathering agents have proved highly beneficial for agriculture. Soil is most important for agriculture and soil is made by agents of weathering. Large plains, which are ideal for farming have been made by agents of weathering. Many minerals could come out of rocks because of weathering.

Four factors which help in weathering are as follows:

(a) Temperature

(b) Rain

(c) Snow

(d) Wind

(b) Dholavira

Correct answer is (c) Three

(c) 4.5 billion years

(d) Sun and moon aligning along a line

Earthquake at the bottom of ocean.

Ocean currents are also referred to as rivers flowing in oce. The water flows in a certain direction in these rivers. Some ocean currents have warm water, while some others have cold water. Unlike a river, flow of current in ocean does not happen because of slope of land but happen because of difference in temperature and density.

An earthquake of 7 or more on Richter scale can be highly devastating. It usually causes immense damage to houses and buildings. Landslides also happen in case of powerful earthquakes. It can result in loss of life and property.

(d) Tectonic plate

(d) West Bengal

Earth’s tilt on its axis.

In the crust of earth.

Ocean current are also referred to as rivers flowing in oceanswer. The water flows in a certain direction in these rivers. Some ocean currents have warm water, while some others have cold water. Unlike a river; flow of current in ocean does not happen because of slope of land but happen because of difference in temperature and density. Significance of Ocean Current: Ocean current has profound effect on human life. Warm currents keep a place warm, while cold currents keep a place cold. Wind flowing through regions of warm current bring plenty of moisture and cause rains at higher altitudes. There are places where a warm current meets with a cold current. There is big temperature differential at such places which causes storms like hurricane or typhoon. Ocean current dlso influences navigation of ships and life of sea creatures.

A thick slab of ice in motion is called glacier. Glacier is defined as a persistent body of dense ice which keeps on moving because of its own weight. Effect of global warming on glaciers: The average temperature of the earth has been increasing in recent years. This is called global warming. Rate of melting of glaciers is more than the rate of their formation due to global warming. Hence, glaciers are shrinking in size. Melting of glaciers has resulted in rise in sea levels. Many cities in coastal areas face the risk of gradually getting submerged.

Weathering forces keep on breaking the rocks to convert them into soil. The heat from the sun, rain, frost and wind physically break the rocks. Rocks expand because of heat from the sun and contract when they cool down during night. Continuous contraction and expansion make the rocks weaker and they start to break down. Force of the falling rain increases the rate of breakdown of rocks. The rainwater also weathers down the rocks. Water which gets collected in the fissures in the rock becomes frozen due to frost. We know that volume of water increases on freezing. Increased volume of ice further widens the fissures in rocks. When dust particles hit the rocks because of wind, they work like sandpaper and weather the rock. This is a slow process but its whole effect becomes apparent after thousands of years. Weathering by wind is considered as the reason for lack of mountains in deserts. Mountains which existed in desert changed into sand due to weathering. Many chemical processes keep on happening in nature, e.g. oxidation, carbonation, coalescing of water molecules, dissolution, etc. These processes also facilitate weathering of rocks by making them weaker. Biological forces like plants, animals, microbes and humans also play important role in weathering of rocks. Roots of plants penetrate the rocks and break the rocks when the roots grow. Many animals break the rocks by making holes. Man has proved to be the biggest enemy of rocks. Weathering potential of man is greatest because of machines and gunpowder. Living beings give off many chemicals in nature and such chemicals help in weathering of rocks.

The imbalance in internal structure of earth causes earthquake. This imbalance can also be caused by pressure from natural or man-made aquifers and also by explosion. Earthquake is usually explained on the basis of tectonic movement theory.

Earth’s crust is composed of 29 tectonic plates. Six of the tectonic plates are most important. These plates keep on moving at very slow pace. All kinds of moulding activities take place along the edges of these plates. Boundaries of tectonic plates are of three types, viz. transform boundary, divergent boundary and convergent boundary. Transform boundary is conservative in nature, divergent boundary is constructive and convergent boundary is destructive. Highly destructive earthquake happen due to convergent or destructive boundaries. Collision of plates is considered as the prime reason of earthquakes in northern India, Tibet and Nepal. Earthquakes also happen due to other kinds of boundaries of tectonic plates but it is difficult to explain such earthquakes.

Richter scale.

C. Shyamji Krushna Verma

For a deer, it’s world is the forest. The trees, plants, flora and fauna in the forest are its world.

The odd one is straw.

The fly being very small, everything it sees around is giant size. Even the smallest things look like monsters to the fly.

The bird saw the vast blue sky when it flew beyond the tree.

The bird felt that the world was made of leaves when it fluttered out of its nest.

well-shell, other-mother, find-blind, blue – you