CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Chemical Reactions

Take some sug...

Question

Take some sugar in a test tube and heat it for some time. You will observe that sugar first melts, then turns brown,and finally gets charred and turns black. This experiment proves that sugar contains__________.

A

carbon

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

hydrogen

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

oxygen

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

sulphur

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A carbon
Carbon is a unique non metal having different forms and properties. It constitutes all living things, like plants and animals. Sugar is obtained from sugar cane plant which also contains carbon.

Suggest Corrections

thumbs-up

2

Similar questions

Q. Fill in the blanks by choosing an appropriate option.
When sugar is dissolved in water, it undergoes a ___(i)___ change but if sugar is heated in a test tube over the Bunsen burner flame, it first melts, turns brown and finally turns ___(ii)___. The new substance formed is ___(iii)__ and the change is a ____(iv)____ change.

Q. A student added

10

12

H_{2} S O_{4}

in a test tube containing

5

6

g of sugar crystals and warmed it gently. He noticed that white crystals slowly turned brown and became a black mass. What happened in this change?

Q. Put the words and phrases in the correct order to make sentences:
the mixture solution, a red precipitate, Benedict's solution, a test tube containing, on heating, showing the presence of, glucose solution and turns into, a mixture, of, sugar, in

Q. Take a test tube. Fix some wax at its bottom portion. Pour some water into the test tube. Tilt the test tube as shown and heat the water at the top of the test tube. Observe the wax at the bottom. You will find that the wax has not melted. Why?

Q. An experiment is set up as shown. Test tube (i) contains a solution of potassium hydroxide. Test tube (ii) and (iii) contain freshly prepared limewater. A conical flask between (ii) and (iii) contains germinating seeds. Air is blown into the set up through pipe X. What do you think will be the appearance of limewater in test tubes (ii) and (iii) after some time?

Option	Test tube (ii)	Test tube (iii)
A.	No change is seen in limewater.	No change is seen in limewater.
B.	Limewater turns milky.	No change is seen in limewater.
C.	No change is seen in limewater.	Limewater turns milky.
D.	Limewater turns milky.	Limewater turns milky.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Chemical Reactions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Chemical Reactions

Standard VIII Chemistry

Join BYJU'S Learning Program

CrossIcon