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What is a Bakelite ? (1) Solution (2) Acid (3) Base (4) Polymer

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Polymer
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Description : The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : (1) Nylon 66 (2) Terylene (3) Tollen’s (4) Bakelite

Answer : Nylon 66

Description : Which of the following is a natural polymer? (1) Bakelite (2) Nylon (3) Polythene (4) Starch

Answer : Starch

Description : The polymer used in making plastic crockery is (1) Decron (2) Nylon (3) Bakelite (4) Melamine

Answer : Melamine

Description : Terylene is a condensation polymer of ethylene glycol and which acid? (1) Benzoic Acid (2) Salicylic acid (3) Phthalic acid (4) Terephthalic acid

Answer : Terephthalic acid

Description : Which of the following is the strongest base in aqueous solution ? (1) Diethylamine (2) Triethylamine (3) Ammonia (4) Ethylamine

Answer : Diethylamine

Description : Which of the following is used to remove rust stains on cloth? (1) Kerosene (2) Lime (3) Oxalic acid solution (4) Petrol 

Answer : Oxalic acid solution

Description : Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? (1) Methylene blue (2) Methyl red (3) Phenolphthaline (4) Methyl orange

Answer : Methyl orange

Description : Bakelite is a copolymer of Phenol and (1) Formaldehyde (2) Acetaldehyde (3) Benzaldehyde (4) Cinnaldehyde

Answer : Formaldehyde

Description : What is the active ingredient in many common laxative that is also an acid-base indicator?

Answer : ANSWER: PHENOLPHTHALEIN (pron: fEn-el-thal-E-en) 

Description : A standardized base solution should be protected from which of the following gases? w) hydrogen x) carbon dioxide y) nitrogen z) argon

Answer : ANSWER: X -- CARBON DIOXIDE 

Description : During the electrolysis of a dilute aqueous solution of sulfuric acid, what happens to the sulfuric acid concentration? 

Answer : ANSWER: IT REMAINS THE SAME

Description : Which of the following aqueous solutions would hav the lowest boiling point? Would it be a 1.0 molal solution of: w) Hydrochloric acid x) Sodium Hydroxide y) Acetic Acid, z) Magnesium Chloride

Answer : ANSWER: Y -- ACETIC ACID

Description : If a material has the capacity to behave either as an acid or a base it is said to be: w) amorphous x) amphoteric y) anhydrous z) aklaline

Answer : ANSWER: X -- AMPHOTERIC

Description : Buffer solutions show which one of the following traits: w) absorb acid and base with only small changes in pH x) indefinite stability y) high elasticity z) abnormal density

Answer : ANSWER: W -- ABSORB ACID AND BASE WITH ONLY SMALL CHANGES IN pH

Description : A compound which is an electron pair donor is generally classified as a: w) Lewis acid x) Bronsted base y) Bronsted acid z) Lewis base

Answer :  ANSWER: Z -- LEWIS BASE 

Description : A substance that accepts an electron pair is classified as a: w) bronsted-lowry acid x) bronsted-lowry base y) lewis acid z) lewis base

Answer : ANSWER: Y -- LEWIS ACID

Description : In protolytic reactions in which the reactants are much stronger as an acid and a base than the products, the proton transfer reaction: w) does not occur x) approaches completeness y) produces a much stronger acid and a much weaker base z) produces a much weaker acid and a much stronger base

Answer : ANSWER: X -- APPROACHES COMPLETENESS

Description : Which of the following chemical reactions does not lead to formation of a salt? w) Reaction of salts with acids. x) The reaction of base anhydrides with acid anhydrides. y) Action of water on oxides of nonmetals. z) Reaction of acid with base.

Answer : ANSWER: Y -- ACTION OF WATER ON OXIDES OF NONMETALS. (If water reacts with oxides of nonmetals, an acid is formed.)

Description : Any species that acts as an electron-pair acceptor a: w) Lewis base x) Bronsted base y) Lewis acid z) Bronsted acid

Answer : ANSWER: Y -- LEWIS ACID

Description : Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.

Answer : ANSWER: Z -- IT IS A CONDUCTOR OF ELECTRICITY.

Description : Which of the following forms the weakest acid in aqueous solution? w) hydrogen fluoride x) hydrogen chloride y) hydrogen bromide z) hydrogen iodide

Answer : ANSWER: W -- HYDROGEN FLUORIDE

Description : Which of the following is NOT a general property of hydroxide bases in aqueous solution? w) High solubility x) Bitter taste y) Ability to neutralize aqueous acid solutions z) Ability to change phenolphthalein from colorless to red

Answer : ANSWER: W -- HIGH SOLUBILITY (The hydroxides of the alkali metals are soluble in water but all the other metal hydroxides are only moderately or sparingly soluble.)

Description : Nylon threads are made of (1) Polyester polymer (2) Polyamide polymer (3) Polyvinyl polymer (4) Polysaccharide

Answer : Polyamide polymer

Description : Silicone is a polymer of (1) Tetraalkyl silane (2) Silicon tetrachloride (3) Dialkyl dichloro silane (4) Silane

Answer : Dialkyl dichloro silane

Description : Natural rubber is the polymer of : (1) Isoprene (2) Styrene (3) Butadiene (4) Ethylene

Answer : Isoprene

Description : The name of plastic polymer from which combs, toys, bowls etc., can be made, is (1) Polyurethane (2) Polystyrene (3) Metallic polysulphides (4) Teflon

Answer : Polystyrene

Description : Polythene is polymer of (1) Ethylene (2) Propylene (3) Acetylene (4) Aniline

Answer : Ethylene

Description : What is the common name of the substance which is inert to nearly all chemicals and is a polymer of tetrafluoroethylene?

Answer : ANSWER: TEFLON

Description : Leaf and Garbage disposal "plastic bags" are usually made from what polymer?

Answer : ANSWER: POLYETHYLENE

Description : Starch is the polymer of what monosaccharide?

Answer : ANSWER: GLUCOSE

Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green

Answer : From brown to blue-black

Description : The fundamental scientific principle in the operation of battery is (1) acid-base interaction (2) dialysis (3) dissociation of electrolytes (4) oxidation-reduction

Answer : dissociation of electrolytes

Description : What is the molarity of a salt solution prepared b dissolving three moles of salt in 500 milliliters of water? w) 1 x) 2 y) 4 z) 6

Answer : ANSWER: Z -- 6

Description : A sample of grapefruit juice at 25 degrees Celsius has a hydronium concentration of 1.78 X 10-3 molar. What is the pH of the solution? w) 2.22 x) 2.75 y) 3.25 z) 6.33

Answer : ANSWER: X -- 2.75

Description : What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx ) (3) Carbon dioxide (CO2 ) and Carbon monoxide (CO) (4) Oxides of carbon (COx ) and Oxides of nitrogen (NOx )

Answer : Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx ) 

Description : Which of the following is not a polymer? w) rayon x) Teflon y) rubber z) penicillin

Answer : ANSWER: Z -- PENICILLIN

Description : Which is an example of a polymer? w) salt x) oil y) plastic z) glucose

Answer : ANSWER: Y -- PLASTIC

Description : An emulsion is a colloidal solution of (1) Liquid in liquid (2) Solid in liquid (3) Gas in solid (4) Solid in Solid

Answer :  Liquid in liquid

Description : Bee sting contains (1) An acidic liquid (2) a salt solution (3) an alkaline liquid (4) a corrosive liquid

Answer : An acidic liquid

Description : Soap helps in better cleaning of clothes because (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Answer : It reduces the surface tension of solution

Description : A solution is (1) a homogeneous mixture of two or more substances (2) a solid dissolved in a liquid (3) a solid dissolved i water (4) a mixture of two liquids 

Answer : a homogeneous mixture of two or more substances

Description : Which one of the folling is also khow as solution ? (1) A compound (2) A homogeneous mixture (3) A heterogeneous mixture (4) A suspension

Answer : A homogeneous mixture

Description : The apparatus used to test acidity of aqueous solution is (1) pH meter (2) Ammeter (3) Hygrometer(4) Acidmeter

Answer : pH meter

Description : Which of the following metals can deposit copper from copper sulphate solution ? (1) Platinum (2) Mercury (3) Iron (4) Gold 

Answer : Iron

Description : One property of ammonia is (1) It is insoluble in water (2) It is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Answer :  Its aqueous solution turns red litmus blue

Description : When a spoon is to be electroplated with nickel the spoon is (1) dipped in a nickel sulphate solution (2) made anode and a pure nickel rod, the cathode (3) made cathode and a pure nickel red, the anode (4) coated with nickel sulphate and dried

Answer : made cathode and a pure nickel red, the anode

Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at cathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Answer : Copper at cathode and oxygen at anode.

Description : Silver nitrate solution is kept in brown bottles in laboratory because (1) it reacts with ordinary white bottles (2) brown bottles stops the passage of light through it (3) brown bottles do not react with it (4) brown bottles react with it

Answer : brown bottles stops the passage of light through it

Description : The charcoal used to decolourise brown sugar solution is (1) Wood charcoal (2) Coconut charcoal (3) Animal charcoal (4) Sugar charcoal 

Answer : Animal charcoal

Description : A substance which readily forms colloidal solution in contact with water is called (1) Extrinsic colloid (2) Associated colloid (3) Hydrophobic colloid (4) Hydrophilic colloid 

Answer : Hydrophilic colloid

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