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Q:

Atomic number of which of the following elements is greater than that of Iodine

A) Silver B) Bromine
C) Platinum D) Zinc
 
Answer & Explanation Answer: C) Platinum

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Q:

Which of the following is an ore of Aluminium?

A) Galena B) Cryollite
C) Cinnabar D) Epsom Salt
 
Answer & Explanation Answer: B) Cryollite

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Q:

Atomic number of which of the following elements is greater than that of Zinc

A) Copper B) Iron
C) Chromium D) Bromine
 
Answer & Explanation Answer: D) Bromine

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Q:

Which of the following gases is not generated in a biogas plant?

A) H2S B) CO2
C) CH4 D) CO
 
Answer & Explanation Answer: D) CO

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Q:

Which of the following is used as non­ stick coating for cooking utensils?

A) Perspex B) Styrofoam
C) Polystyrene D) Teflon
 
Answer & Explanation Answer: D) Teflon

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Q:

The common name of sulphur is

A) Freon B) galena
C) lime D) brimstone
 
Answer & Explanation Answer: D) brimstone

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Q:

Which of the following can be beaten and converted into thin sheets?

A) Zinc B) Phosphorus
C) Sulphur D) Oxygen
 
Answer & Explanation Answer: A) Zinc

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Q:

Alkali metals can

A) be highly unstable at room temperature B) vaporize at room temperature
C) easily gain electrons D) easily lose electrons
 
Answer & Explanation Answer: D) easily lose electrons

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