Chemistry Questions

Q:

In the following gases, which is not a colorless or odourless gas?

A) Nitrogen B) Chlorine
C) Hydrogen D) Oxygen
 
Answer & Explanation Answer: B) Chlorine

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Q:

Ammonium nitrate, on thermal decomposition, produces :

A) NH3 and NO2 B) NH3 and NO
C) N2 and H2O D) N2O and H2O
 
Answer & Explanation Answer: D) N2O and H2O

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Q:

Who stated the following law : 'The properties of the elements are the periodic function of their atomic masses'?

A) Dobereiner B) Moseley
C) Newlands D) Mendeleev
 
Answer & Explanation Answer: D) Mendeleev

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Q:

Metal oxides which react with acids as well as bases are called

A) Amphoteric oxides B) Neutral oxides
C) Basic oxides D) Acidic oxides
 
Answer & Explanation Answer: A) Amphoteric oxides

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Q:

In the Modern Periodic Table, elements are arranged in

A) increasing atomic mass number B) increasing atomic number
C) decreasing atomic mass number D) decreasing atomic number
 
Answer & Explanation Answer: B) increasing atomic number

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Q:

Which of the following gases is used to prevent food material from getting oxidised?

A) Oxygen B) Chlorine
C) Nitrogen D) Hydrogen
 
Answer & Explanation Answer: C) Nitrogen

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Q:

Pick the odd one out from the following:

A) NaOH B) Cu(OH)2
C) NH4OH D) Zn(OH)2
 
Answer & Explanation Answer: A) NaOH

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Q:

Which of the following is called Aurum?

A) Bronze B) Gold
C) Silver D) Copper
 
Answer & Explanation Answer: B) Gold

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