[VSQ]Chemistry Q&A For All Competitive Exam||Set 18

Chemistry Q&A For All Competitive Exam

✱✱Q1.

Lead pencil contains _____ .

⇒ Graphite

✱✱Q2.

Ozone is _______ .

⇒ Diamagnetic

✱✱Q3.

The important metal used with iron to produce stainless steel is _____ .

⇒ Chromium

✱✱Q4.

Which gas is responsible for the swelling of bread?

⇒ Carbon dioxide

✱✱Q5.

The metal constituent of chlorophyll is _____ .

⇒ Magnesium

✱✱Q6.

Which acid is used for etching glass?

⇒ Hydrofluoric acid (HF)

✱✱Q7.

Dead organisms are transformed into petroleum and natural gas ______ .

⇒ Absence of air

✱✱Q8.

The name ‘catalyst’ was given by _____ .

⇒ Berzilius

✱✱Q9.

A polymeric substance used to make parachute is _____ .

⇒ Viscose

✱✱Q10.

What is used to avoid melting of ice?

⇒ Gelatine

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SET 17 [PREV]

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