Question

❤❤ Good Afternoon ❤❤

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✍ Write all Questions of give reason with answer ( only include main points )

✍ Chapter :- Metal and non - metal

✍ Class 10 th Cbse

Chemistry

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❤ Be Brainly ♦

Answer 1

Q. give reasons for metal being lustrous.

Q. silver is the best conductor of electricity yet it is very rarely used

Q. Aqua regia can dissolve gold and Platinum. How?

Q. hydrogen gas is not the wall when metals are chasing iron Copper and Aluminium react with nitric acid

Q. hydrogen is not a metal still placed on reactivity series

Q. why do ionic compounds conduct electricity

Q. why ionic compound do not conduct electricity in solid form

Q. why roasting is used for sulphide ores

Q. why rest is chemical process than physical

Q why galvanization is better than tinning

Q. give reason why the Qutub Minar is known as wonder of ancient Indian metallurgy

Answer 2

Answer:

please mark as

Explanation:

i don't know

Given tan(A+B)=\sqrt{3}

3

⟹A+B=60∘⋯(1)

tan(A−B)=\sqrt[1]{3}

1

3

⟹A−B=30∘⋯(2)

(1)+(2)⟹2A=90∘⟹A=45∘

Put A value in (1)

⟹B=60∘−45∘=15∘