Which of the following catalyst is used in making of sulfuric acid?
- (A) Green vitriol
- (B) Iron pyrites
- (C) Zinc oxide
- (D) Platinized asbestos
- (D) Platinized asbestos
The ingredients of gun metal are:
- (A) Zinc and iron
- (B) Brass and tin
- (C) Tin and copper
- (D) Iron and titanium
- (C) Tin and copper
Which substance is bad conductor of electricity but a good conductor of heat?
- (A) Asbestos
- (B) Mice
- (C) Celluloid
- (D) Purspecks
- (B) Mice
The high temperature super-conductors are:
- (A) Earth metals
- (B) Ceramic oxides
- (C) Metal alloys
- (D) Inorganic polymers
- (B) Ceramic oxides
Long distance photography is facilitated by:
- (A) Infrared rays
- (B) Ultraviolet rays
- (C) X-rays
- (D) Visible rays
- (C) X-rays
Nuclear fission is caused by the impact of:
- (A) Electron
- (B) Proton
- (C) Neutron
- (D) Positron
- (C) Neutron
Which of the following is the weakest?
- (A) Metallic bond
- (B) Ionic bond
- (C) Covalent bond
- (D) Hydrogen bond
- (D) Hydrogen bond
The “Cinnabar” is an important ore of:
- (A) Lithium
- (B) Mercury
- (C) Zinc
- (D) Aluminum
- (B) Mercury
The oxide of nitrogen used in medicine as anesthetic is:
- (A) Nitrogen oxide
- (B) Nitric dioxide
- (C) Nitrous oxide
- (D) Nitrogen peroxide
- (D) Nitrogen peroxide
“Plaster of Paris” is made from:
- (A) Lime
- (B) Granite
- (C) Zinc
- (D) Gypsum
- (D) Gypsum
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