4th dsolid state

1. Which one of the following ores is best concentrated by froth floatation method (A) Malachite (B) Cassiterite (C) Galena (D) MagnesiteWhich of the following metals found in native state (A) Aluminium (B) Magnesium(C) Silver (D) Manganese (A) Malachite (B) Cassiterite (C) Carnallite (D) Galena

1. In Friedel-Crafts reaction which catalyst is used (A) 50% NaOH (B) Anhydrous Aluminium Chloride(C) Dry ether (D) Palladium Barium Sulphate

B) Copper (C) Sodium (D) Aluminium

(A) Malachite (B) Cassiterite (C) Carnallite (D) Galena

1. Which of the following metals is leached by cyanide process? (A) Silver (B) Copper (C) Sodium (D) Aluminium


1. Which of the following metals is leached by cyanide process? (A) Silver (B) Copper (C) Sodium (D) Aluminium1. The presence of electric charge on the colloidal particles is Indicated by (A) Osmosis (B) Dialysis(C) Electrolysis (D) ElectrophoresisWhich of the following metals is leached by cyanide process? (A) Silver (B) Copper (C) Sodium (D) Aluminium

1. 1. 2. Which one of the following ores is best concentrated by froth floatation method (A) Malachite (B) Cassiterite (C) Galena (D) MagnesiteWhich of the following metals found in native state (A) Aluminium (B) Magnesium(C) Silver (D) Manganese (A) Malachite (B) Cassiterite (C) Carnallite (D) Galena


B) Copper (C) Sodium (D) Aluminium




1. Which of the following metals is leached by cyanide process? (A) Silver (B) Copper (C) Sodium (D) Aluminium1. The presence of electric charge on the colloidal particles is Indicated by (A) Osmosis (B) Dialysis(C) Electrolysis (D) ElectrophoresisWhich of the following metals is leached by cyanide process? (A) Silver (B) Copper (C) Sodium (D) Aluminium Aluminium chloride exists as (A) Dimer (B) Polymer (C) Monomer (D) Tetramer

1. Which of the following elements exist most aboundantly on earth crust (A) Aluminium (B) Iron(C) Oxygen (D) Nitrogen

1. Which of the following metals found in native state (A) Aluminium (B) Magnesium(C) Silver (D) Manganese (A) Malachite (B) Cassiterite (C) Carnallite (D) Galena





1. 1. 1. The presence of electric charge on the colloidal particles is Indicated by (A) Osmosis (B) Dialysis(C) Electrolysis (D) Electrophoresis2. Aluminium chloride exists as (A) Dimer (B) Polymer (C) Monomer (D) Tetramer1. In Friedel-Crafts reaction which catalyst is used (A) 50% NaOH (B) Anhydrous Aluminium Chloride(C) Dry ether (D) Palladium Barium Sulphate1. In Friedel-Crafts reaction which catalyst is used (A) 50% NaOH (B) Anhydrous Aluminium Chloride(C) Dry ether (D) Palladium Barium Sulphate1. In Friedel-Crafts reaction which catalyst is used (A) 50% NaOH (B) Anhydrous Aluminium Chloride(C) Dry ether (D) Palladium Barium Sulphate









1. 1. 1. The presence of electric charge on the colloidal particles is Indicated by (A) Osmosis (B) Dialysis(C) Electrolysis (D) Electrophoresis2. Aluminium chloride exists as (A) Dimer (B) Polymer (C) Monomer (D) Tetramer

1. Which of the following elements exist most aboundantly on earth crust (A) Aluminium (B) Iron(C) Oxygen (D) Nitrogen1. Which one of the following ores is best concentrated by froth floatation method (A) Malachite (B) Cassiterite (C) Galena (D) Magnesite

1. Which of the following metals found in native state (A) Aluminium (B) Magnesium(C) Silver (D) Manganese


1. 1. Galena is an ore of which (A) Tin (B) Lead (C) Silicon (D) Silver

1. Which of the following is tribasic? (A) H 3 PO3 (B) H 2 PO3 (C) H 4 PO3 (D H5 PO3 1. 1. Zone refining method has been employed for preparing Ultra-pure sample of(A) Copper (B) Zinc(C) Germanium (D) Silver

1. Which of the following is thermally most stable? (A) S H2 (B) O H2 (C) Se H2 (D) Te H2

1. An important ore of magnesium is (A) Malachite (B) Cassiterite (C) Carnallite (D) Galena


1. Mond's process is used for (A) Nickel (B) Silver (C) Copper (D) Gold

4th dsolid state

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