(A) 17 Neutrons + 17 Protons + 1 Electron
(B) 17 Neutrons + 18 Protons
(C) 17 Protons + 18 Neutrons
(D)
Tag: Inorganic Chemistry
Bleaching powder used in drinking water as a?
(A) Coaguland
(B) Antiseptic
(C) Antibiotic
(D) Disinfectant
Which among following in automobile exhaust can cause cancer?
(A) Lead
(B) Carbon Mono Jade
(C) Oxides of Nitrogen
(D) Polycyclic Hydrocarbons
Metals commonly used for electroplating?
(A) Nickel, Lead and Chromium
(B) Chromium, Copper and Nickel
(C) Gold, Sodium and Chromium
(D) Gold, Sodium and Potassium
Which of the following produces highest amount of energy upon oxidation?
(A) Fat
(B) Glucose
(C) Protein
(D) An Alkane
The BOD values of water indicate the?
(A) Amount of oxygen used for biochemical oxidation
(B) Amount of organic debris
(C) Amount of oxygen used for biochemical reduction
(D) Amount of ozone used for biochemical oxidation
Which among following is used in welding broken pieces of iron rails and machine parts?
(A) Aluminium powder
(B) Solder
(C) Aluminium sulphate
(D) None of the above
Raw materials used for the manufacture of glass are?
(A) Sand, Sulphur, Soda
(B) Limestone, Charcoal, Sulphur
(C) Sand, Charcoal, Soda
(D) Sand, Soda, Limestone