Chemistry MCQs | PPSC CSS PMS NTS MDCAT MCQs Tests

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Solved MCQs, PPSC NTS JObs Tests Past Years Exams MCQs

Q.1: Which of the following potassium fertilizers are more useful for horticultural crops tobacco AND potatoes ?

1. KCI
2. KNO3
3. K2SO4
4. KMnO4

B

Q.2: The main pollutant of leather tanneries in the waste water is--------- ?

1. chromium III
2. chromium IV
3. chromium V
4. chromium VI

B

Q.3: Which of the following is not a heavy industry ?

1. iron
2. fertilizer
3. paper
4. none

D

Q.4: Which sequence of steps is correct for the manufacture of cement ?

1. crushing heating mixing grinding
2. crushing mixing heating grinding and mixing
3. crushing grinding mixing heating
4. mixing heating grinding crushing

C

Q.5: Which of the following gases is the main cause of acid rain ?

1. CO
2. NO2
3. both a AND b
4. none of the above

B

Q.6: The basic hydrolysis of ethyl acetate produces--------- ?

1. ethanol
2. acetic acid
3. ethanol and acetic acid
4. ethanol and sodium acetate

D

Q.7: Pollutants have adverse effect over---------- ?

1. Biosphere
2. Ecosystem
3. Both a AND b
4. Hydrosphere

B

Q.8: Purines and pyrimidines are------------ ?

1. Enzymes
2. Nitrogenous bases
3. Carbohydrates
4. Lipids

B

Q.9: Safe and the most reliable method of drying crystals is through-------- ?

1. Filter paper
2. Vacuum desiccators
3. Oven
4. None of these

B

Q.10: Calcarious material includes------- ?

1. lime stone
2. marble
3. chalk
4. all of the above

D