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Kiara Singh

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Kiara Singh

Asked: December 21, 2023In: Class 10 Science

a) Explain why carbon forms covalent bond? Carbon forming a large number of compounds – Give Two reasons. b) The formation of ammonia molecule – Explain.

2024 CBSE Class 10 Science Sample Question Paper SQP download with solutions

Kiara Singh

Asked: December 21, 2023In: Class 10 Science

A compound A (C2H4O2) reacts with Na metal to form a compound ‘B’ and evolves a gas which burns with a pop sound. Compound ‘A’ on treatment with an alcohol ‘C’ in presence of an acid forms a sweet-smelling compound ‘D’ (C4H8O2). On addition of NaOH to ‘D’ gives back B and C. Identify A, B, C and D write the reactions involved.

CBSE class 10 science sample question paper SQP 2023-2024

Kiara Singh

Asked: December 19, 2023In: Class 10 Science

What is biogas? Describe the steps involved in obtaining biogas.

NCERT Science Class 10 sample question paper with solution 2023-24

Kiara Singh

Asked: December 19, 2023In: Class 10 Science

A variegated leaf with green and yellow patches in used for an experiment to prove that chlorophyll is required for photosynthesis. Before the experiment the green portions (A), and the pale-yellow portions (B), are observed. Now, answer that – what will be the colour of ‘A’ just before and after the starch test? Write also the equation of the process of photosynthesis and mark, as well as validate from which molecule the by-product is obtained.

Rationalised syllabus 2023-2024 CBSE Class 10 sample question paper

Kiara Singh

Asked: December 19, 2023In: Class 10 Science

Pertaining to endocrine system, what will you interpret if- i) You observe swollen neck in people living in the hills ii) Over secretion of Growth Hormone takes place during childhood iii) Facial hair develops in boys aged 13.

CBSE Science Class 10 sample question paper with solution 2023-2024

Kiara Singh

Asked: December 19, 2023In: Class 10 Science

‘Sweet tooth may lead to tooth decay’. Explain why? What is the role of tooth paste in preventing cavities?

Rationalised syllabus CBSE NCERT Science Class 10 sample question paper with solution 2023-2024

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Kiara Singh

a) Explain why carbon forms covalent bond? Carbon forming a large number of compounds – Give Two reasons. b) The formation of ammonia molecule – Explain.

What is biogas? Describe the steps involved in obtaining biogas.

Pertaining to endocrine system, what will you interpret if- i) You observe swollen neck in people living in the hills ii) Over secretion of Growth Hormone takes place during childhood iii) Facial hair develops in boys aged 13.

‘Sweet tooth may lead to tooth decay’. Explain why? What is the role of tooth paste in preventing cavities?

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