Recent questions in Olympiad-Science

The isomeric pair is

asked Sep 12, 2017 by meena.p

1 answer

Availability of water and minerals in the soil for maximum absorption by roots is in the -

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following is formed when sodium hydroxide reacts with hydrochloric acid?

asked Sep 12, 2017 by meena.p

1 answer

KOH is used in making of

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1 answer

Out of the given definitions, which is the most appropriate definition of climate?

asked Sep 12, 2017 by priyanka.c

1 answer

Given below from (i) to (iv) are some food items. (i) Boiled and mashed potato (ii) Glucose solution (iii) A slice of bread (iv) Mustard oil Which of the above will gie blue -black colour when tested with iodine?

asked Sep 12, 2017 by priyanka.c

1 answer

In the absence of which of the following will photosynthesis not occur in leaves?

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following is not required by plants for food synthesis?

asked Sep 12, 2017 by priyanka.c

1 answer

Which information is not conveyed by a balanced chemical equation?

asked Sep 12, 2017 by meena.p

1 answer

Loss of hydrogen halide from alkyl halide gives

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1 answer

Which of the following gives the correct increasing order of the atomic radii of O, F and N?

asked Sep 12, 2017 by meena.p

0 answers

Which of the following is not a decomposition reaction

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

An element has an atomic number of 15 with which of the following elements will it show similar chemical properties.

asked Sep 12, 2017 by meena.p

1 answer

Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?

asked Sep 12, 2017 by meena.p

1 answer

Water in swimming pools is purified by adding

asked Sep 12, 2017 by meena.p

1 answer

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

asked Sep 12, 2017 by meena.p

1 answer

The Ph of a solution of HCL is 4. This shows that the molarity of the solution is

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1 answer

Soaps are formed by saponification of

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1 answer

Graphite differs from Diamond because graphite is:

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Mineral acids are stronger acids than carboxylic acids because i. mineral acids are completely ionized ii. carboxylic acids are completely ionized iii. mineral acids are partially ionized iv. carboxylic acids are partially ionized

asked Sep 12, 2017 by meena.p

1 answer

Element X forms a chloride with the formula XCl2 , which is a solid with a high melting point . x would most likely be in the same group of the periodic table as

asked Sep 12, 2017 by meena.p

1 answer

Naturally occurring metallic compounds are called

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What is the Name of Scientist, who stated that matter can be converted into energy

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1 answer

When ozone absorbs UV radiation, energy is converted in to

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1 answer

Which of the following is used for dissolution of gold?

asked Sep 12, 2017 by meena.p

1 answer

What among following is used to produce artificial rain ?

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1 answer

Identify the wrong statement in the following

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1 answer

Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

asked Sep 12, 2017 by priyanka.c

1 answer

The microorganisms present in the soil require moisture (water) and nutrients for growth and survival. Choose from the options below the habitat (place) where the soil has plenty of water and nutrients.

asked Sep 12, 2017 by priyanka.c

1 answer

The main buffer system of the human blood is

asked Sep 12, 2017 by meena.p

1 answer

What kind of element would you find on the far left-hand side of the periodic table?

asked Sep 12, 2017 by meena.p

1 answer

The maximum and minimum temperature displayed daily in the weather bulletin refer to the-

asked Sep 12, 2017 by priyanka.c

1 answer

Which one of the following depicts the correct representation of atomic radius(r) of an atom ?

asked Sep 12, 2017 by meena.p

1 answer

Vinegar is a solution of

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1 answer

Read carefully the terms given below. Which f the following set is the correct combination of organs that do not carry out any digestive functions?

asked Sep 12, 2017 by priyanka.c

1 answer

The manufacture of bread, beer and wine involves alcoholic fermentation of glucose to ethanol by yeast. Which of the following five statements concerning this process are correct? I. Yeast carries out fermentation because yeast cells lack mitochondria. II. For every molecule of ethanol produced, one molecule of co1 evolves. III. For every one molecule of glucose fermented, net two molecules of ATP are generated. I V. More than 80% of the chemical energy of the glucose is released as heat. (V) Glycolysis is an integral part of this fermentation.

asked Sep 12, 2017 by meena.p

1 answer

The organism that can prepare their own food are called

asked Sep 12, 2017 by priyanka.c

1 answer

Which of the following is the purest form of water?

asked Sep 12, 2017 by priyanka.c

1 answer

By which Reaction metal is obtained from metal oxide

asked Sep 12, 2017 by meena.p

1 answer

Raw materials for production of urea are

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1 answer

What happens when calcium is treated with water?

asked Sep 12, 2017 by meena.p

1 answer

Which has triple bond ?

asked Sep 12, 2017 by meena.p

1 answer

Which of these is a mechanical process of treating waste water?

asked Sep 12, 2017 by priyanka.c

1 answer

The type of trees and animals thriving in a forest depends on

asked Sep 12, 2017 by priyanka.c

1 answer

Which of these shows asexual reproduction

asked Sep 12, 2017 by priyanka.c

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When the gases sulphur dioxide and hydrogen sulphide mix in the presence of water , the reaction $SO_2+2H_2S \to 2H_2O +3S$ Occurs. Here Hydrogen sulphide is acting as

asked Sep 12, 2017 by meena.p

1 answer

Identify the substance that needs to be transported to all parts of the body.

asked Sep 12, 2017 by priyanka.c

1 answer

Respiratory organs in insects are

asked Sep 12, 2017 by priyanka.c

1 answer

Chemical weathering is fastest in

asked Sep 12, 2017 by priyanka.c

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