Chemistry - Mock Test 50

Question 491

Which one of the dissociation constant?

A) CHCl2COOH B) CH2C1COOH C) CH3COOH D) CC13COOH

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Question 492

Philosopher s wool is?

A) ZnCl2 B) ZnS C) Zn (N03)2 D) ZnO

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Question 493

2.0 g of CH4 on combustion produce 25 kcal. Heat of combustion of CH4 would be?

A) 200 kcal B) 400 kcal C) 500 kcal D) 600 kcal

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Question 494

Which chemical decreases the H+ ion concentration of an acetic acid solution?

A) AgNO3 B) NaCN C) Al2 (SO4)3 D) NH4C1

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Question 495

A complex polysaccharide produced from sucrose by the bacterium Leuconostoc Mesenteries is?

A) Chitin B) Starch C) Cellulose D) Dextrin

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Question 496

The interferons are?

A) Antiviral proteins B) Antibiotic proteins C) Antigen proteins D) Antibacterial particle

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Question 497

Disaccharide sugars are?

A) Maltose B) Glucose C) Sucrose D) Raffinose

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Question 498

Which are sulphide ores?

A) Zinc blende B) Galena C) Cryolite D) Rutile

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Question 499

Which are colligative properties?

A) Osmotic pressure B) Pressure C) Elevation in boiling point D) Volume

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Question 500

A fruity smell is obtained by the reaction of ethanol with?

A) CH3COCH3 B) PCl5 C) CH3COOH D) CH3CHO

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