UrbanPro

Location Set your Location

Login Ask & Answer Success Stories Paid Courses Free Classes Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore

Hyderabad

Delhi

Mumbai

Chennai

Pune

Kolkata

Gurgaon

Ahmedabad

Jaipur

Noida

✕

Your Worksheet is Ready

Download Print Share Generate New Worksheet

CBSE Class 10 Science Worksheet

Unit I: Chemical Substances - Nature and Behaviour - Carbon and its compounds

1.
State TRUE/FALSE: Acetic acid is stronger than HCl.
A) TRUE B) FALSE
2.
Which of the following carbon compound is not organic?
A) Aldehydes B) Carbonates C) Carboxylic acid D) Ketones
3.
How is ethene prepared from ethanol?
4.

. The number of isomers of pentane is

A)

(a) 2

 B)


(b) 3

 C)


(c) 4

 D)


(d) 5
5.
Why are mineral acids stronger acids than carboxylic acids?
6.
What is produced when acetic acid reacts with an alcohol in the presence of concentrated sulphuric acid?
A) Ketones B) Aldehyde C) Esters D) None of these
7.
Fill in the blanks: Ethanol is made unfit for drinking by adding poisonous substances and it is called ___________ alcohol.
8.
Distinguish between ethanol and ethanoic acid.
9.
Fill in the blanks: The addition of bromine to unsaturated hydrocarbon is called ______________.
10.
What two properties of carbon lead to a large number of carbon compounds?
11.
How many electrons are shared in triple covalent bond?
A) 2 B) 3 C) 4 D) 6
12.
In which form does carbon exists in the atmosphere?
13.
Fill in the blanks: Methane reacts with chlorine in presence of ______________ to form chloro methane.
14.
How is propanol converted to propanoic acid?
15.
Fill in the blanks: Compounds of carbon having double or triple bonds between the carbon atoms are called _____________ carbon compounds.
16.
Fill in the blanks: The substance added to denature ethanol is/are ____________.
A) Methanol B) Pyridine C) Copper sulphate D) All of these
17.
Fill in the blanks: The dehydrating agent which removes water from ethanol is _______________.
18.
Fill in the blanks: The first member of alkyne homologous series is _______.
A) Ethyne B) Propyne C) Ethene D) Propene
19.

Diamond is a bad conductor of electricity but a good conductor of heat(true or false).

A)

True

 B)

False
20.
In which of the following compounds, - OH is the functional group?
A) Propanone B) Propanol C) Propanoic acid D) Propanal

CBSE Class 10 Science Worksheet

Unit I: Chemical Substances - Nature and Behaviour - Carbon and its compounds

Answers

1.
Option B
2.
Option B

3.
By heating ethanol with excess concentrated sulphuric acid at 443 K
4.
Option B

5.
Mineral acids are completely ionised and carboxylic acids are partially ionised.
6.
Option C

7.
Denatured
8.
Ethanoic acid gives a brisk effervescence with sodium hydrogen carbonate while ethanol does not.
9.
Bromination
10.
Catenation and tetravalency.
11.
Option D

12.
carbon monoxide in traces and carbon dioxide.
13.
Sunlight
14.
By oxidation of propanol using oxidising agent such as alkaline KMnO4
15.
Unsaturated
16.
Option D

17.
Concentrated sulphuric acid
18.
Option A
19.
Option A

Solution:

As we know electrical conductivity relies on the flow of free electrons as there are no free electrons in the diamond so diamond is a bad conductor of electricity.

So diamond is a bad conductor of electricity.

Now unlike most electrical insulators diamond is a good conductor of heat because of strong covalent bonding and low photon scattering.

Thermal conductivity of natural diamond was measured to be about 2200W / (m. k), which is five times more than the silver, the most thermally conductive metal.

So diamond is a good conductor of heat.

So the given statement is true.

20.
Option B
Download Print Share Generate New Worksheet

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All
ThinkVidya Learning Pvt Ltd © 2010-2024 All Rights Reserved