Question

Q 1: The value of acceleration due to gravity _____________ as we go below the earth surface. * Q 2: Metallic oxides and metallic __________ are called bases. * Q 3: _________ acid is used for making explosives, plastics and dyes. * Q 4: Vinegar consists of ___________ acid. * Q 5: The three layers of protective membrane that cover the brain and spinal cord are called _____________. * Q 6: ______________ are branch-like extensions of the nerve cells. * Q 7:____________ nervous system decreases the heart beat , lowers perspiration ,stimulates digestion to bring the body into normal conditions. * Q 8: The under secretion of thyroxine in pregnant mothers, infants and children causes a disorder, known as ________________. * Q 9: Process of separation of different constituents from petroleum is called ____________________. * Q 10: Time period of ____________ era was 25 crores to 6.5 crores years ago. *

Answer 1

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Q1. The value of acceleration due to gravity _________ as we go below the earth surface.

• Decreases

Q2. Metallic oxides and metallic ______ are called bases.

• Hydroxide

Q3. ______ acid is used for making explosives, plastics and dyes.

• 3. Calcium ammonium nitrate

Q4. Vinegar consists of _______ acid.

• Acetic acid

Q5. The three layers of protective membrane that cover the brain and spinal cord are called ________.

• Meninges Membrane

Q6. ________are branch-like extensions of the nerve cells.

• Dendrites and Axons

Q7. ________nervous system decreases the heart beat , lowers resperspiration ,stimulates digestion to bring the body into normal conditions.

• Autonomic nervous system

Q8. The under secretion of thyroxine in pregnant mothers, infants and children causes a disorder, known as _______.

• Autoimmune diseases

Q9. Process of separation of different constituents from petroleum is called ________.

• Refining process

Q10. Time period of ________ era was 25 crores to 6.5 crores years ago.

• Palaeozoic