Recent questions tagged olympiad

Read the following environmental conditions of tropical rain forests. (i) Hot and humid climate (ii) Unequal lengths of days and night (iii) Abundant rain fall (iv) Abundant light and moisture Identify the conditions from the above list that are responsible for the presence of large number of plants and animals in tropical rain forests.

asked Sep 13, 2017 by priyanka.c

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Which of the following statement is incorrect for penguins?

asked Sep 13, 2017 by priyanka.c

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Read the following statements with reference to the villi of small intestine. (i) They have very thin walls. (ii) They have a network of thin and small blood vessels close to the surface. (iii) They have small pores through which food can easily pass. (iv) They are finger-like projections. Identify those statements which enable the villi to absorb digested food.

asked Sep 13, 2017 by priyanka.c

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The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to

asked Sep 13, 2017 by priyanka.c

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When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which of the following is the term given to such openings?

asked Sep 13, 2017 by priyanka.c

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Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?

asked Sep 13, 2017 by priyanka.c

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Open drain system is a breeding place for which of the following?

asked Sep 13, 2017 by priyanka.c

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The branchy part of a tree above the stem is known as

asked Sep 13, 2017 by priyanka.c

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Pick the option which gives the names of a tree and an animal, respectively from the following.

asked Sep 13, 2017 by priyanka.c

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The end product of fat digestion is

asked Sep 13, 2017 by priyanka.c

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Which of the following is not the name of a tree?

asked Sep 13, 2017 by priyanka.c

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On which of the following day is World Water Day observed?

asked Sep 13, 2017 by priyanka.c

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Which of the following is a way to use water economically?

asked Sep 13, 2017 by priyanka.c

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Seeds of drumstick and maple are carried to long distances by wind because they possess

asked Sep 13, 2017 by priyanka.c

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The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in -

asked Sep 13, 2017 by priyanka.c

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Earthworms and frogs breathe through their skin because of which the skin of both the organisms is

asked Sep 13, 2017 by priyanka.c

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Read the following statements with reference to soil. (i) Weathering is a very fast process of soil formation (ii) Percolation of water is faster in sandy soils (iii) Loamy soil contains only sandy and clay (iv) Top soil contains the maximum amount of humus Choose the correct statement from the above.

asked Sep 13, 2017 by priyanka.c

1 answer

Priya went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs and also a variety of animals like monkeys, birds, elephants , snakes, frogs, etc.The most likely location of this sanctuary is in the-

asked Sep 13, 2017 by priyanka.c

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The acid present in the stomach

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The term that is used for the mode of nutrition in yeast, mushroom and bred mould is

asked Sep 13, 2017 by priyanka.c

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The substance which, on treating with chlorine, yields bleaching powder is

asked Sep 13, 2017 by meena.p

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A student adds 2 mL of acetic acid to a test tube containing 2 mL of distilled water. He then shakes the test tube well and leaves it to settle for some time. After about 5 minutes he observes that in the test tube there is :

asked Sep 13, 2017 by meena.p

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The by product of soap is

asked Sep 13, 2017 by meena.p

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Bleaching action of chlorine is by

asked Sep 13, 2017 by meena.p

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The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

asked Sep 13, 2017 by meena.p

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What is Calcium sulphate ?

asked Sep 13, 2017 by meena.p

1 answer

Which order of relative size amongst the following is incorrect?

asked Sep 13, 2017 by meena.p

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In the following equations: $Na_2CO3 + xHCl → 2NaCl + CO_2 + H_2O$ the value of x is

asked Sep 13, 2017 by meena.p

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The final product of protein digestion is

asked Sep 13, 2017 by priyanka.c

1 answer

Which of the following is/are products of wastewater treatment?

asked Sep 13, 2017 by priyanka.c

3 answers

Sewage is mainly a

asked Sep 13, 2017 by priyanka.c

1 answer

Match the articles given m Column-! with the fibres/plastics from which they are made in Column-H.

asked Sep 13, 2017 by meena.p

1 answer

Which of the following is not prepared from the wood obtained from forest?

asked Sep 13, 2017 by priyanka.c

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Which one of the following is the softest?

asked Sep 13, 2017 by meena.p

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Which of the following gases can be used for storage of fresh sample of an oil for a long time?

asked Sep 13, 2017 by meena.p

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Babu visited a forest near his town with his classmates and his teacher. As they were entering the forest, their class teacher told them not to make noise in the forest as noise could disturb the

asked Sep 13, 2017 by priyanka.c

1 answer

A student Prepared $20\%$ sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below (I) Sodium hydroxide solution turns red litmus blue (II) Sodium hydroxide readily dissolves in water (III) The beaker containing solution appears cold when touched from outside (IV) The blue litmus paper turns red when dipped into the solution The correct observations are :

asked Sep 13, 2017 by meena.p

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The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

asked Sep 13, 2017 by meena.p

1 answer

A man digging the ground near a water body found that the soil was moist. As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called

asked Sep 13, 2017 by priyanka.c

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Which of the following are not the liquid forms of water? (i) Snow (ii) Lake water (iii) River water (iv) Water vapour (v) Ice Choose the correct combination from the options below

asked Sep 13, 2017 by priyanka.c

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Lila observed that a pond with clear water was covered up with a green algae within a week. By which method of reproduction did the algae spread so rapidly?

asked Sep 13, 2017 by priyanka.c

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The formula $C_6H_5-CO-CH_3$ represents

asked Sep 13, 2017 by meena.p

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Covalent compounds

asked Sep 13, 2017 by meena.p

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In the third period of the periodic table the element having smallest size is

asked Sep 13, 2017 by meena.p

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Carbon exists in the atmosphere in the form of

asked Sep 13, 2017 by meena.p

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The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

asked Sep 13, 2017 by meena.p

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Reaction of any substance with air is called

asked Sep 13, 2017 by meena.p

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They are pipe-like, consisting of a group of specialised cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualify for the features mentioned above?

asked Sep 12, 2017 by priyanka.c

1 answer

Fish breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to

asked Sep 12, 2017 by priyanka.c

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Soil conservation measures are mainly aimed at protecting which of the following ?

asked Sep 12, 2017 by priyanka.c

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