Question

Class X(Sclence)
Time-40 min
One mark each:
1) Why does of aqueous solution of an acid conduct electricity?
2) How glucose breaks in lack of oxygen?
3) Name the defect shown in the diagramn below. Also mention the lens that can be used for its
correction
4) What happens on heating hydrated salt?
5) What is power of accomodation?
Two marks each
6) What is neutralization reaction? Glve its two applications also.
7) Why the sun appears reddish at the time of sunrise and sunset?
8) What advantage do the terrestrial organisms have over the aquatic organisms in respiration?
Three marks each-
9) (a) Glve chemical name and chemical formula of baking soda
(b) Give its preparation (c) Give its uses also.
10) Name the parts of human eye and mention the function of each.
11) Label 1,2,and 3. Mention the function and enzymes secreted by them
G​

Answer 1

Answer:

1.Because of presence of charged ions.

2.Glucose -glycolysis-ethanoic acid +2ATP energy

(1 molecule) in cytoplasm

3.i can't help because the figure is not given.

4.Crystals structure change.

5.Power of accommodation is the ability of eye lens to focus bear and far objects clearly.