Recent questions in Olympiad-Science

The weather of a place over a long period of time is called

asked Sep 11, 2017 by priyanka.c

1 answer

Red color of tomatoes is due to alkene named

asked Sep 11, 2017 by meena.p

1 answer

Layer which protects earth from being hit by meteoroids is

asked Sep 11, 2017 by meena.p

1 answer

Which of the following is not the necessary condition for rusting

asked Sep 11, 2017 by meena.p

1 answer

Reactions in which reactants react to form products and simultaneously products reverse back in to reactants are called

asked Sep 11, 2017 by meena.p

1 answer

Arrange the following elements in the order of their decreasing metallic character: $Na, Si, Cl, Mg, Al$

asked Sep 11, 2017 by meena.p

1 answer

Which of the following are correct structural isomers of butane?

asked Sep 11, 2017 by meena.p

0 answers

Which of the following metals does not displace $H_2$ gas from dilute $HCl$ or dilute $H_2SO_4$?

asked Sep 11, 2017 by meena.p

1 answer

Vitamin which helps in chemical transmission of images from eye to brain is

asked Sep 11, 2017 by meena.p

1 answer

Which one of the following metal reacts vigorously with oxygen and water?

asked Sep 11, 2017 by meena.p

1 answer

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same? i. Good thermal conductivity ii. Good electrical conductivity iii. Ductility iv. High melting point

asked Sep 11, 2017 by meena.p

1 answer

A student takes some zinc granules in a test tube and adds dil. HCl to it. He would observe that the colour of the zinc granules changes to :

asked Sep 11, 2017 by meena.p

1 answer

Reaction of halogens (Group-VII) and alkane (saturated hydrocarbons) in presence of sunlight is an example of

asked Sep 11, 2017 by meena.p

1 answer

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

asked Sep 11, 2017 by meena.p

1 answer

When a metal replaces hydrogen atom then compound form is

asked Sep 11, 2017 by meena.p

1 answer

When copper oxide is heated with hydrogen, copper metal and water are formed. Which of the following is oxidising agent in this reaction?

asked Sep 11, 2017 by meena.p

1 answer

Which of the following actions increases the rate of dissolving?

asked Sep 11, 2017 by meena.p

1 answer

Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?

asked Sep 11, 2017 by meena.p

1 answer

On increasing temperature of amorphous solid they

asked Sep 11, 2017 by meena.p

1 answer

What is the volume of Object X?

asked Sep 11, 2017 by meena.p

1 answer

The inner wall of the stomach secretes

asked Sep 11, 2017 by priyanka.c

1 answer

Which of these are required for photosynthesis ?

asked Sep 11, 2017 by priyanka.c

1 answer

Lichens is an example of

asked Sep 11, 2017 by priyanka.c

1 answer

Digestion is completed in

asked Sep 11, 2017 by priyanka.c

1 answer

The organ that absorbs water and soil is

asked Sep 11, 2017 by priyanka.c

1 answer

The climate in tropical rainforests is

asked Sep 11, 2017 by priyanka.c

1 answer

Ground water is formed in the

asked Sep 11, 2017 by priyanka.c

1 answer

Soil with smallest particle size is

asked Sep 11, 2017 by priyanka.c

1 answer

Yeast is used in wine and beer industries because it produces

asked Sep 11, 2017 by priyanka.c

1 answer

Cramps are caused due to the accumulation of

asked Sep 11, 2017 by priyanka.c

1 answer

Nephrons are responsible for filtering out excess salts, ______ and water

asked Sep 11, 2017 by priyanka.c

1 answer

Organisms that excrete urea as a waste product are referred to as

asked Sep 11, 2017 by priyanka.c

2 answers

The female reproductive whorl of a flower is

asked Sep 11, 2017 by priyanka.c

1 answer