Which one of the following mineral does not contain oxygen?

Post 253

SSC CHSL Questions 2014

Question 151 Which one of the following mineral does not contain oxygen?

A) Haematite
B) Bauxite
C) Cryolite
D) Calcite
Answer: Cryolite
Explanation: Cryolite does not contain oxygen. Chemically Cryolite Na3AlF6 is sodium hexafluoroaluminate.

Question 152 A non electronic conductor is 

A) Iron
B) Gas Carbon
C) Copper Sulphate
D) Mercury
Answer: Doubt b/w Copper Sulphate and gas carbon. ?If you know the correct answer please mail to gksea.com@gmail.com or just comment below with reason.

Question 153 Which of the following will replace hydrogen from acids to form salts?

A) S
B) Na
C) Ag
D) P
Answer: Na

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