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Bhavna

Asked: June 20, 2021In: Class 10 Science

When a copper wire is left in silver nitrate solution, it is observed that the solution turns bluish green. (a) Explain the observation. (b) Write the balanced chemical equation to represent the change taking place.

NCERT Important Questions Class 10 Science CBSE 2022-2023. NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board NCERT book extra.

Bhavna

Asked: June 20, 2021In: Class 10 Science

Write one example of each of the following: (a) A metal and a non-metal which are liquids at room temperature. (b) A metal which is very soft and a non-metal which is very hard. (c) A metal which has very low melting point and a non-metal which has very high melting point.

NCERT Important Questions Class 10 Science CBSE 2022-2023. NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board NCERT book extra.

Bhavna

Asked: June 20, 2021In: Class 10 Science

State reason for the following: (i) A tarnished copper vessel begins to shine again when rubbed with lemon. (ii) All alkalies are bases but all bases are not alkalies. (iii) Use of a mild base like baking soda on the honey-bee stung area gives relief.

NCERT Important Questions Class 10 Science CBSE 2022-2023. NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board NCERT book extra.

Bhavna

Asked: June 20, 2021In: Class 10 Science

(a) State two functions of bile juice. (b) Differentiate between the functions of enzymes pepsin and trypsin.

NCERT Important Questions Class 10 Science CBSE 2022-2023. NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board NCERT book extra.

Bhavna

Asked: June 20, 2021In: Class 10 Science

(a) Name the disease by which a person is likely to suffer due to the deficiency of iodine. Also mention its symptoms. (b) Name the hormone secreted by thyroid gland and state its function.

NCERT Important Questions Class 10 Science CBSE 2022-2023. NCERT Book Extra Questions for Session 2022-2023 CBSE Board and UP Board Others state Board NCERT book extra.

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When a copper wire is left in silver nitrate solution, it is observed that the solution turns bluish green. (a) Explain the observation. (b) Write the balanced chemical equation to represent the change taking place.

Write one example of each of the following: (a) A metal and a non-metal which are liquids at room temperature. (b) A metal which is very soft and a non-metal which is very hard. (c) A metal which has very low melting point and a non-metal which has very high melting point.

State reason for the following: (i) A tarnished copper vessel begins to shine again when rubbed with lemon. (ii) All alkalies are bases but all bases are not alkalies. (iii) Use of a mild base like baking soda on the honey-bee stung area gives relief.

(a) State two functions of bile juice. (b) Differentiate between the functions of enzymes pepsin and trypsin.

(a) Name the disease by which a person is likely to suffer due to the deficiency of iodine. Also mention its symptoms. (b) Name the hormone secreted by thyroid gland and state its function.

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