GK science

. True or false? Dogs are herbivores.

• True

• False

• Both

Which is the most abundant gas in the earth's atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• methane gas

Which gas evolved from paddy fields and marshes?

• Methane

• carbon dioxide

• Oxygen

• Nitrogen

Which gases cause acid rain? More options can be selected

• Nitrogen oxides

• Carbon dioxide

• Sulphur dioxide

• Hydrogen oxides

Which element is a liquid at ordinary temperature?

• Mercury

• Lr

• He

• Al

Which of the following organs is not part of the digestive system?

• Heart

• Liver

• Pancreas

• Stomach

At which range of temperatures do enzymes work best?

• 20-30°C

• 30-40°C

• 40-50°C

• 60-70°C

By the breaking down of carbons through ______, nutrients in organic matter is restored back into the environment.

• photosynthesis

• decomposition

• biota

• erosion

Which of the following is NOT true about the magnetic field around a coil of wire carrying a current?

• Changing the direction of the current will reverse the poles

• Making the coil wider will increase the strength

• Putting an iron core into the coil will increase the strength

Which of the following uses an electromagnetic effect?

• Iron

• Light bulb

• Toaster

• Washing machine