Recent questions and answers in Olympiad-Science

In India dress codes were regulated by

answered Jan 30, 2022 by sakibahemad786

2 answers

Two students of Class VI have performed the same experiment 'Separation of Sugar' by different methods as shown below: Which of the following statements are correct? I. Method I is faster than method 2. II. Method 2 leads to the decomposition of sugar to carbon. III. Method 2 is more appropriate than method I. IV Method 2 is slow but pure sugar is obtamed without getting decomposed.

answered Jan 6, 2022 by coome20100311

1 answer

Ozone is formed in the upper atmosphere by a photochemical reaction with

answered Sep 14, 2021 by smitabehera272

5 answers

A large amount of heat is produced in power plants while energy is released which turns

answered Aug 30, 2021 by faxalelahi982

2 answers

Extremely small suspended particles can be separated from a liquid by

answered May 18, 2021 by ad8368189

2 answers

Identify the reversible change

answered Mar 6, 2021 by info.parmodgarg

1 answer

Long shadows with different positions are found when sun is low in western horizon in

answered Mar 4, 2021 by khadizazaman2009

2 answers

Which of the following can cause a stroke?

answered Nov 21, 2020 by chikondenakazwe19

2 answers

Which of the following activity does not involve use of water?

answered Jul 15, 2020 by andu031383

1 answer

Which characteristic must all species have in order to avoid extinction ?

answered Jul 6, 2020 by msleggs21

2 answers

How long would you check to see if an unconscious casualty is breathing normally ?

answered Jun 8, 2020 by gheramacaraeg

2 answers

Fertilizers which come from living things like animal dung, compost, fish and bone meals are

answered Apr 30, 2020 by maham.6279

2 answers

Which of the following instrument works on electromagnetic induction?

answered Apr 29, 2020 by harirao.e

2 answers

An electrolytic cell uses electrical energy to drive

answered Apr 10, 2020 by divyaragu18

2 answers

If mass of a substance will be lowered its density will be

answered Apr 5, 2020 by aliyanalisandhu1010

2 answers

The main constituent of petroleum gas is

answered Mar 15, 2020 by deepalij928

1 answer

Fibres obtained from animals and plants are called

answered Mar 3, 2020 by pavanivangaru17

1 answer

Which type of lens have negative power?

answered Mar 2, 2020 by amishak5792275

1 answer

The angle between two refracting faces of a prism is known as

answered Feb 10, 2020 by sidharthsundeep2004

1 answer

A charged body at rest produces

answered Feb 10, 2020 by jibannayak2011

1 answer

Movement of ants towards sugar is called

answered Jan 4, 2020 by nageshpagdhare9

1 answer

In the separation of dyes A and B by chromatography, component B has more solubility in the solvent. Which component will rise faster?

answered Sep 16, 2019 by porresdl1986

1 answer

Filament of a torch bulb is

answered Aug 18, 2019 by shabbirbasha.msjb

1 answer

Which one is not a source of carbohydrate?

answered Aug 15, 2019 by alagujothi21

2 answers

Which pair of the substances among the following would float in a tumbler half filled with water?

answered Aug 10, 2019 by basha55555

1 answer

Which of the following is biodegradable?

answered Aug 1, 2019 by shoplasses

2 answers

The method of preparing compost with the help of earthworms is called

answered Apr 29, 2019 by amrit.sidhu85

1 answer

When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

answered Apr 7, 2019 by abin2242

2 answers

Which of the following statements is/are true for sexual reproduction in plants? (i) Plants are obtained from seeds (ii) Two plants are always essential (iii) Fertilisation can occur only after pollination (iv) Only insects are agents of pollination Choose from the options given below

answered Feb 15, 2019 by wajidakhan080

2 answers

The product of equivalent weight and valency of an element is equal to _

answered Feb 7, 2019 by bijubalangcc

3 answers

Polycot is obtained by mixing

answered Feb 2, 2019 by jagdishbodade15

2 answers

Which of the following statements are correct? 1. The magnetic lines of force are always continuous loops, so they are endless. 2. The lines of force always starts from the south pole to north pole 3. Soft iron core is generally not preferred for solenoid 4. Force of the moving charge is maximum when it moves perpendicular to the direction pf the magnetic field.

answered Jan 20, 2019 by kavyamanchanda512

1 answer

Air is not visible because it

answered Jan 18, 2019 by shababkhan73668

1 answer

A natural phenomenon that becomes harmful due to pollution is _____________.

answered Jan 10, 2019 by ammaranjum2007

2 answers

There would be no food for animals if the air did not contain

answered Dec 28, 2018 by mmarkale

3 answers

The apparent depth of an object at the bottom of the tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?

answered Dec 7, 2018 by dta79989

2 answers

Moutaineers carry oxygen cylinders with them because

answered Nov 28, 2018 by prkminj07

1 answer

A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron clinging to the

answered Oct 22, 2018 by jprj567

1 answer

The most abundant element in the earth's crust is ?

answered Oct 10, 2018 by meena.p

1 answer