Free trb questions Online Test - MeritNotes

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No. of Questions :10

Remaining Time :

1. When the initial concentration of the reactant increases, the rate of formation of the product

(a) Increases
(b) Decreases
(c) Remains same
(d) None of these

2. Rectified spirit contains

(a) 18% ethanol
(b) 75% ethanol
(c) 95.6% ethanol
(d) 100% ethanol

3. Which one of the following pairs is correctly matched?

(a) Zinc sulphide - Philosopherâ€™s wool
(b) Zinc phosphide - Rat poison
(c) Silver iodide - Horn Silver
(d) Silver chloride - Artificial rain

4. Formalin is an aqueous solution of

(a) Methyl acetate
(b) Propanaone
(c) Methanol
(d) Ethanol

5. The catalyst used in the preparation of sulphuric acid by contact process is

(a) Sodium hydride
(b) Zinc
(c) Nickel
(d) Vanadium (v) oxide

6. Of the following metals, which one pollutes the air of a big city?

(a) Chromium
(b) Copper
(c) Cadmium
(d) Lead

7. In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?

(a) Aluminium
(b) Iron
(c) Copper
(d) Titanium

8. The sodium salt of a long chain carboxylic acid possessing cleaning action is

(a) A fat
(b) A soap
(c) A detergent
(d) An ester

9. Sulphur is extracted by

(a) Contact process
(b) Frasch process
(c) Solvay process
(d) Haber process

10. The milk is an example of

(a) Air-solution
(b) Colloidal solution
(c) Emulsion
(d) Solution

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