Class X Science MCQ Extra Questions Answers Class 10 Science Terminal Exams MCQ Solutions Class 10th Science Session 2022-23 10th Science Terminal Exam Based MCQ Extra Questions

The absence of amylase in the saliva thus affects the breakdown of starch into simpler sugar molecules. As we know that, the process of digestion begins in the mouth. The mouth contains a digestive enzyme, salivary amylase. This enzyme breaks ...

(i) it is does not react with water (ii) it reacts violently with water (iii) it reacts less violently with water (iv) bubbles of hydrogen gas formed stick to the surface of calcium

Dialysis is the procedure to remove waste products and excess fluid from the blood, when the kidneys stop working properly. It often involves diverting blood to a machine to be cleaned.

These are saprotrophs and digestion in saprotrophs take place before ingestion. They break down and convert complex organic molecules present in dead and decaying matter into simpler substances outside their body.

To get the diminished image of the candle flame, the object must be placed at infinity.

Na (sodium) possesses all the above properties. It is too soft and can be cut with a knife. Na is a highly exothermic reaction producing a lot of heat. It also reacts with water and burns due to the ...

The angle of refraction must be less than the angle of incidence. While angle of emergence is equal to angle of incidence.

At night, when there is no sunlight, transpiration is very low but the absorption of substances by roots is high.

Cloudy days will cause the rate of photosynthesis to decrease due to the low availability of Sunlight.