Explore topic-wise InterviewSolutions in Current Affairs.

Correct option is (a) starch

• Pebble plants are also called living stones. 
• They protect themselves from their enemies by adapting themselves to their habitat. They survive by living partly underground. 
• They avoid being eaten by blending in with surrounding rocks. 
• Leaves of these plants are not green as in almost all higher plants, but various shades of cream, grey and brown, patterned with darker windowed areas, dots and red lines. 
• The markings on the top surface disguise the plant in its surroundings (camouflage) 
• Thus, they adopt wonderfully to their habitats and protect themselves from their enemies.

Sources of fibres in our diet are cereals, like wheat, jowar, bajra etc. from which we make chapati or bhakari and all the fruits and vegetables that we eat.

Fibrous substances help the food to move forward in the alimentary canal at the right speed.

A diet which provides all the constituents like, protein, carbohydrates, fats, vitamins and minerals in right quantities is called a balanced diet.

Correct option is (c) stunted

When carbohydrates are digested they are converted to sugars. The sugars combine with oxygen and bum slowly in our body releasing energy. This energy is utilised for doing various work. Hence carbohydrates are called energy giving food.

(i) A magnified real image – When the object is placed at a distance of 20 cm from the mirror i.e., between focus and centre of curvature.

(ii) A magnified virtual image – When the object is placed at a distance of 10 cm from the mirror i.e., within its focus.

(iii) A diminished real image – When the object is placed at a distance of 35 cm from the mirror i.e. beyond the centre of curvature.

(iv) An image of same size as the object – When the object is placed at a distance of 30 cm from the mirror i.e., at the centre of curvature.

The most important use of carbohydrates is to provide the body with energy.

If a person does not get enough carbohydrates and proteins, their growth gets stunted, he feels constantly tired and cannot cope with his studies, games or other tasks.

1. When the water is still, its surface will be smooth and regular reflection takes place on it. 

2. The image of an object formed due to still water will be clear. 

3. When water is disturbed, the surface of water becomes rough and irregular reflection takes palce. 

4. Due to this irregular reflection the image of an object may not be formed, if formed it will not be clear.

(1) True 

(2) True 

(3) False. if the image is erect, the height of the image is positive. 

(4) True 

(5) False. a concave mirror can also form a virtual and erect image. 

(6) False. doctors use a converging beam of light to study teeth, ears and eyes.

If our food does not contain enough fibre it can lead to constipation.

(1) False. if the mirrors are kept at right angle to each other then the number of images formed will be 3.

(2) False. a concave mirror is used in flood lights.

(3) False. a concave mirror can sometimes form a diminished image as well. 

(4) True 

(5) False. the distance between the focus and the pole is called the focal length. 

(6) True

Paper becoming translucent is a sign of the presence of fats in the food stuff kept on it.

When the angle between two plane mirrors is 60° then five images of an object are formed in the mirrors.

Correct option is  A) 30

Correct option is (c) stored

Cream, butter, ghee, oil, nuts, meat, egg, yolk contain fats.

Our body store the fats we eat because if sometimes food is not available then it can get energy from the stored fats.

Object used as convex and concave mirror in our surroundings.

Fats are stored in our body and when food is not available the body uses this fat to release energy. The fats stored give shape to our body and also prevent loss of heat from our body. This helps in keeping the body warm. The fats also protect our internal organs from damage. Therefore it is necessary to include some amount of fat in our food.

Objects at home that act as spherical mirrors are : 

1.  Spoons 
2.  Spectacles 
3.  Sink 
4.  Cooking vessel

Correct option : (4) longer wavelength

Explanation :

When the photon collides with an electron it share the energy with electron according to laws of conservation of energy and momentum. Hence its energy and velocity consequently will decrease and therefore in accordance with relation λ = h/mv  it will have a longer wavelength.

Gautam Buddha’s father’s name was Shuddhodana and mother’s name was Mayadevi.

A) i, ii and iii only true

Correct option is: (b) guiding

When a photon collides with an atomic electron inside an emitter metal, the electron absorbs whole of the photon energy in a single shot or nothing. The electron uses the absorbed energy (1) to liberate itself from the atom, (2) to overcome the potential energy barrier at the surface thus liberating itself from the metal, and (3) retains the remaining part as its kinetic energy.

Correct option is: (a) compassion

(C) both total energy and total momentum are conserved

Correct option is: (a) compassion

Correct option is (b) fuels

Correct option is (b) wind & (c) solar

Correct option is (a) Energy

(1) Things made of mud like a earthen water pot.

(2) Solar calculator, solar cooker.

The limestone

In the coastal region, where under water shelters are built for tourist to view the sea bed and marine life is called water tourism.

Homeless people seek shelter at the roadside, on footpaths, under bridges, in tumble down buildings, in railway or bus stations and open grounds.

Europe and North America.

(a) Climate 

(b) Structure 

(c) Luxury

We get energy by using natural fuels like coal, natural gas or mineral oil.

1. Mountainous region: Sloping roof:: Plain: Flat roof. 

2. Cement: Limestone :: Bricks : Soil. 

3. Coal: Exhaustible energy:: Solar energy: Non exhaustible energy.

Solar energy, Wind energy and Biogas.

A house protects us from sun, wind, cold, rain and wild animals.

Shortage of agricultural land leads man to cut down forests and use the land for agriculture.

Using natural fuels not only leads to its exhaustion but also to air pollution.

Coal, natural gas, mineral oil.

Correct answer is Air

The types of pollution that are seen at a construction site are air, water, soil and noise.