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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

Prasant

Asked: December 19, 2023In: Class 10 Science

What happens when aqueous solutions of Sodium sulphate and Barium chloride are mixed? Give a balanced equation for the reaction with state symbols. Name and define the type of chemical reaction involved in the above change.

2024 CBSE NCERT Class 10 science sample question paper and solution

tonny34

Asked: December 19, 2023In: Class 8 Social Science

What do we mean when we speak of law enforcement? Who is responsible for enforcement? Why is enforcement so important?

NCERT Solutions for Class 8 Social Science Civics Chapter 8 Law and Social Justice Question 4 Page No. 111 NCERT Academic Session 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

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