Explain the Sodium nitroprusside test. Write its use.

Sodium fusion extract of an organic compound produces violet colour when treated with sodium nitroprusside . This indicates the presence of _______.

Explain the Ester test.

Explain thermit reaction and give its uses.

Explain Hoffmann's carbylamines test/Isocyanides test. OR Write short notes on the following: (i) Carbylamines reaction.

What is acceleration. Write its formula. Write its unit. Explain positive, negative and zero acceleration.

Which nanomaterial is used in sunscreen lotion? Write its use.

Use your brain power! Can you tell : Explain why does the lime water turns milky in the reaction of acetic acid with sodium carbonate.

Apparatus: Big test tube, delivery tube fitted in a rubber cork, knife, candle, etc. Chemicals : Sodium metal, ethanol, magnesium ribbon, etc. Procedure : Take 10 mL ethanol in a big test tube. Cut Sodium metal into 2-3 pieces of a cereal grain size. Put the sodium pieces into the ethanol in the test tube and fix the gas delivery tube to the test tube. Take a burning candle near the outlet of the gas delivery tube and observe. Which is the combustible gas coming out of the gas delivery tube?

Explain refractive index using water.

Sodium bisulfite is sodium salt of sulfurous acid, write down its detailed bond structure.