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Published on: 29/05/2021
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Questions + Answers key
Take MCQ Science Test1.
Name the term used for the solution of the reactant or product when dissolved in water.
2.
Why don't birds sitting on live wire get electric shock?
3.
Name two types of spherical mirror
4.
Give the mirror image of 'AMBULANCE"
5.
Name the hormone that controls the rate of respiration, also name the part of brain responsible for controlling respiration.
6.
A doctor advised a patient to take less sugar in her diet. Which disease is she suffering from?
7.
Name the element of halogen family required for the proper functioning of thyroid gland.
8.
A compound ‘X’ is an important ingredient of an antacid. It is also used in fire extinguisher. Identify ‘X’.
9.
A compound ‘X’ is used for drinking has pH=7. Its acidified solution in presence of electricity undergoes decomposition to produce gases ‘Y’ and ’Z’. The volume of ‘Y’ is double than ‘Z’.’Y’ is highly combustible whereas ‘Z’ is a supporter of combustion. Identify ‘X,’Y, ’Z’ and write the chemical reactions involved.
10.
Arun took a pale green substance X in a test tube, and heated it over a flame. He observed a color change along with evolution of two gases with the smell of burning sulphur
(a) Identify X.
(b) Identify the product formed.
(c) Write the equation.
(d) Identify the type of chemical reaction.
1.
Aqueous
2.
Birds when sit on the live wire just add to circuit, it does not get shock because the current is not flowing out of its body to any other material.
3.
(i) Concave mirror
(ii) Convex mirror
4.
AMBULANCE
5.
Adrenaline hormone controls the rate of respiration (hormone).
Pons (brain part) controls the rate of respiration.
6.
Diabetes, due to deficiency of insulin
7.
Iodine is the halogen element necessary for the making of thyroxine hormone by the thyroid gland, which prevents the formation of goitre.
8.
X. Sodium bicarbonate (NaHCO3)
9.
Electrolysis
X = water, Y = hydrogen, Z = oxygen
10.
Galvanisation
10th Standard CBSE Syllabus & Materials
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