Recent questions in Olympiad-Science

Which order of relative size amongst the following is incorrect?

asked Sep 13, 2017 by meena.p

1 answer

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

asked Sep 13, 2017 by meena.p

1 answer

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

1 answer

Which one of the following is the softest?

asked Sep 13, 2017 by meena.p

1 answer

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

1 answer

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

1 answer

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

1 answer

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

1 answer

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

1 answer

The formula $C_6H_5-CO-CH_3$ represents

asked Sep 13, 2017 by meena.p

1 answer

Covalent compounds

asked Sep 13, 2017 by meena.p

1 answer

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

asked Sep 13, 2017 by meena.p

1 answer

Carbon exists in the atmosphere in the form of

asked Sep 13, 2017 by meena.p

1 answer

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

1 answer

Reaction of any substance with air is called

asked Sep 13, 2017 by meena.p

1 answer

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

1 answer

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

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following briefly describes the desert climate?

asked Sep 12, 2017 by priyanka.c

1 answer

Cellulose-rich food substances are good source of roughage in human beings because

asked Sep 12, 2017 by priyanka.c

1 answer

The swallowed food moves downwards in the alimentary canal because of

asked Sep 12, 2017 by priyanka.c

1 answer

Pitcher plant traps insects because it

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following is waste water?

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following has the strongest stem?

asked Sep 12, 2017 by priyanka.c

1 answer

Which among the following forest animals is the smallest?

asked Sep 12, 2017 by priyanka.c

1 answer

Almost 95% of compounds are of carbon because it can form

asked Sep 12, 2017 by meena.p

1 answer

Property due to which water acts as a universal solvent is

asked Sep 12, 2017 by meena.p

1 answer

Which of the following does not form an acidic salt?

asked Sep 12, 2017 by meena.p

1 answer

An element belongs to period 2 and group 2 the number of valence electrons in the atoms of this element is.

asked Sep 12, 2017 by meena.p

1 answer

Which of the following serve as green lungs?

asked Sep 12, 2017 by priyanka.c

1 answer

An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that

asked Sep 12, 2017 by meena.p

1 answer

The isotope atoms differ in ?

asked Sep 12, 2017 by meena.p

1 answer

Natural rubber is a polymer derived from ?

asked Sep 12, 2017 by meena.p

1 answer

Sea and oceans are full of water on earth.However, a very small percentage of water present on earth is available for us. This percentage is roughly

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following is not a straight chain hydrocarbon?

asked Sep 12, 2017 by meena.p

1 answer

Which of the following does not show water shortage?

asked Sep 12, 2017 by priyanka.c

1 answer

On moving from left to right in a period in the periodic table, the size of the atom.

asked Sep 12, 2017 by meena.p

1 answer

The following reaction is an example of a $ 4H_3(g)+5O_2(g) \to 4NO+6H_2O$ a. Displacement reaction b. Combination reaction c. Redox reaction d. Neutralisation reaction

asked Sep 12, 2017 by meena.p

1 answer

Which of the following parts of a plant take part in sexual reproduction? i. Flower ii. Seed iii. Fruit iv. Branch Choose the correct answer from below.

asked Sep 12, 2017 by priyanka.c

2 answers

In a tall tree, which force is responsible for pulling water and minerals from the soil?

asked Sep 12, 2017 by priyanka.c

1 answer

What is a mixture of potassium nitrate powdered charcoal and sulphur called?

asked Sep 12, 2017 by meena.p

1 answer

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

asked Sep 12, 2017 by meena.p

1 answer

The muscular tube through which stored urine is passed out of the body is called -

asked Sep 12, 2017 by priyanka.c

1 answer

During the process of exhalation, the ribs move

asked Sep 12, 2017 by priyanka.c

1 answer

Ask Questions, Get Answers