A compound ‘ X ’ on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound ‘ Y ’. ‘ X ’ also reacts with sodium metal to evolve a colourless gas ‘ Z ’. Identify ‘ X ’, ‘ Y ’ and ‘ Z ’. Write the equation of the chemical reaction of formation of ‘ Y ’ and also write the role of sulphuric acid in the reaction.

Compound X is CH 3 CH 2 OH -ethanol, which on heating with concentrated sulphuric acid at 443 K gives ethene, which is an unsaturated compound. Ethanol reacts with sodium metal to produce sodium ethoxide and hydrogen gas ' Z '. CH 3 CH 2 OH + Na → CH 3 CH 2 ONa + H 2 Chemical reaction of formation of Y is, CH 3 CH 2 OH Ethanol → 443 K Conc . H 2 SO 4 CH 2 = CH 2 Ethene + H 2 O Here, concentrated sulphuric acid acts as a dehydrating agent, it removes water molecule from ethanol.

What is the difference between soaps and detergents?

Soap Detergent 1. It is sodium or potassium salt of Carboxylic acids. 1. It is ammonium or sodium sulphonate salt of hydrocarbons. 2. Soaps are bio-degradable. 2. Some detergents are non- biodegradable. 3. Soaps do not lather in hard water. 3. Detergent lather well in hard water. 4. Weak cleansing action. 4. Have strong cleansing action.

E M B I B E

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 48

HARD

10th Uttar Pradesh Board

IMPORTANT

Earn 100

Explain the structure of graphite in terms of bonding and give one property based on this structure.

Important Questions on Carbon and its Compounds

MEDIUM

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 49

An element X of group

15

and period

2

exists as diatomic molecule. It combines with hydrogen and forms ammonia in the presence of a suitable catalyst. What is the total number of bonds in a molecule of ammonia?

EASY

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 50

Explain the following statement.

The covalent bond is formed either by sharing of electrons or by gain and loss of electrons.

MEDIUM

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 51

Select the molecules with single bond, double bond and triple bond in

H_{2}, O_{2}

and

N_{2}

.

EASY

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 52

Write the correct forms of the following statement:

Fluorine atom is more electronegative than $H$ atom, therefore, the $H - F$ bond is formed by gain and loss of electrons.

EASY

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 53

Draw the electron dot structure for Ethanoic acid.

MEDIUM

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 54

Write the equations for the combustion of methane and ethanol. What difference did you notice from both the equations?

MEDIUM

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 55

Name the products formed when ethanol burns in air. List two forms of energy that are liberated on burning ethanol.

MEDIUM

10th Uttar Pradesh Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 56

Why vegetable oils are considered healthy as compared to vegetable ghee? How are vegetable oils converted into vegetable ghee? Name and define the process involved.

Learn and Prepare for any exam you want !

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