Assertion : Synthetic fibres are stronger than natural fibres.
Reason : Synthetic fibres are not obtained from plants and animals.
In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If both assertion and reason are false.
synthetic fibres are obtained from plant and animals
In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options A, B, C
and D out of which one is correct.
----P---- Q---- R---- S
A 4---- 3---- 1---- 2
B 3---- 2---- 4---- 1
C 4---- 2---- 3---- 1
D 4---- 1---- 2---- 3
how is petroleum formed by the polymerisation of ethene
Two drops of dilute sulphuric acid were added to
1 g of copper sulphate powder and then small
amount of hot water was added to dissolve it
(step I). On cooling, beautiful blue coloured crystals
got separated (step II). Step I and Step II are
A physical and chemical changes respectively
B chemical and physical changes respectively
C both physical change
D both chemical change.