Question

eriment
the magnet in the given figures.
A
B
A
B
(a)
(b)
25. Define mineral. Mention any two ores of Magnesium.'
26. What is corrosion ? Explain with an example,
27. What are the general molecular formulae of alkanes, alkenes and alkynes ?
28. Saturated hydrocarbons are least reactive. When conditions are suitable, they
undergo substitution reactions. Justify your answer.
SECTION - IV
Note: 1) Answer all the questions. 2) Each question arries 4 marks.
5 * 4 = 20 M
29. What are hydrocarbons ? Explain saturated and unsaturated hydro carbons with
examples.
(OR)
amount of money is spent to​

Answer 1

Answer:

29. when H attached to the Carbon group or C-chain then it is hydrocarbon

Saturated is single bond and unsaturated is having double bonds

27.A) CnH2n-2

B) CnH2n

C) CnH2n+2

Answer 2

Answer:

Definition :

A mineral is a naturally occurring inorganic solid, with a definite chemical composition, and an ordered atomic arrangement. This may seem a bit of a mouthful, but if you break it down it becomes simpler. Minerals are naturally occurring. They are not made by humans. Minerals are inorganic.

ores of magnesium - Carnallite, Magnesite and Dolomite are the ores of magnesium