Recent questions in Olympiad-Science

The first antibiotic was prepared from a

asked Aug 31, 2017 by priyanka.c

1 answer

Which group of organisms comprise only pathogenic members?

asked Aug 31, 2017 by priyanka.c

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Atmosphere comprises of 78%

asked Aug 31, 2017 by priyanka.c

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The process of separation of grains from chaff is

asked Aug 31, 2017 by priyanka.c

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Propagation of ginger is generally done using

asked Aug 31, 2017 by priyanka.c

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The stem has vessels that transport and _throughout the plant.

asked Aug 30, 2017 by priyanka.c

1 answer

Sariska national park is located in

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Each gamete contains

asked Aug 30, 2017 by priyanka.c

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In India following hotspot of biodiversity is/are present

asked Aug 30, 2017 by priyanka.c

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Along with the testicular hormones, sperm formation also needs hormones from

asked Aug 30, 2017 by priyanka.c

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Secretions of endocrine glands are known as

asked Aug 30, 2017 by priyanka.c

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The first cloned sheep was called

asked Aug 30, 2017 by priyanka.c

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First animal to be cloned was

asked Aug 30, 2017 by priyanka.c

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Binary fission occurs in

asked Aug 30, 2017 by priyanka.c

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Which of the following is not a cell?

asked Aug 30, 2017 by priyanka.c

1 answer

Soda water is a solution of carbon dioxide in water. This solution is composed of

asked Aug 30, 2017 by meena.p

1 answer

Some statements about the Rutherford’s a-particle scattering experiment are given : I. As most of the a-particles passed through the gold foil without getting deflected, the positive charge of the atom occupies the entire space. II. As very few particles were deflected from their path, very little space inside the atom is empty. III. As a very small fraction of a-particles were deflected by 180°, all the positive charge and mass of the gold atom were concentrated in a very small volume within the atom. Select the correct statement(s).

asked Aug 30, 2017 by meena.p

1 answer

The characteristic smell of rotten egg spreads throughout the room. This is due to

asked Aug 30, 2017 by meena.p

1 answer

Which one of the following is not an element of first transition series.?

asked Aug 30, 2017 by meena.p

1 answer

Alpha particles are .......nuclie that are doubly positively charged?

asked Aug 30, 2017 by meena.p

1 answer

Which one of the following is not included in the concept of four elements.

asked Aug 30, 2017 by meena.p

1 answer

Non-metals like to _ electrons to become __ ions.

asked Aug 30, 2017 by meena.p

1 answer

As compared to beryllium, magnesium is

asked Aug 30, 2017 by meena.p

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At constant pressure average kinetic energy of gas molecules increases 2 times if

asked Aug 30, 2017 by meena.p

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To prepare ammonia gas, gaseous mixture of

asked Aug 30, 2017 by meena.p

1 answer

Since atoms are neutral, the number of electrons is equal to the number of:

asked Aug 30, 2017 by meena.p

1 answer

In a sample of ethyl ethanoate $(CH_3COOC_2H_5 )$ the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?

asked Aug 30, 2017 by meena.p

1 answer

Molten sodium chloride conducts electricity due to the presence of

asked Aug 30, 2017 by meena.p

1 answer

Out of 1 g of oxygen gas, 1 g of oxygen atoms and 1g of ozone , maximum number of atoms are present in:

asked Aug 30, 2017 by meena.p

0 answers

When a gold foil is bombarded by a beam of α particle, only a few of them get deflected whereas most go straight undeflected. This is because

asked Aug 30, 2017 by meena.p

1 answer

The sequence of steps for separating a mixture of salt, sand and camphor is:

asked Aug 30, 2017 by meena.p

1 answer

Wet clothes are kept for drying. Which of the following does not help them in drying:

asked Aug 30, 2017 by meena.p

1 answer

Angelo required an aqueous solution of sodium chloride. He made the solution by dissolving salt in:

asked Aug 30, 2017 by meena.p

1 answer