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You Are On Question Answer Bank SET 2050

102501. Which salt is used as Ingredient in baking powder?

Answer: Sodium bicarbonate

102502. Which salt is used as gun powder?

Answer: Potassium nitrate

102503. Nitrogen containing organic compounds are called?

Answer: Alkalloids

102504. The taste of Alkalloids is?

Answer: Bitter

102505. Measure of acidic or basic character of a liquid or solution is called?

Answer: pH value

102506. pH scale was discovered by?

Answer: Soren Sorensen

102507. pH value starts from?

Answer: 0 to 14

102508. pH value less than 7 is?

Answer: Acidic in nature

102509. pH value equal to 7 is?

Answer: Neutral solutions (eq: water)

102510. pH value more than 7 is?

Answer: Bases in nature

102511. Solution which resists changes in pH caused by the addition of acid or alkali?

Answer: Buffer solution

102512. Homogeneous mixture of two or more substances is called?

Answer: Solution·

102513. Complex molecules formed by the combination of simpler molecules?

Answer: Polymer

102514. The word polymer means?

Answer: Big molecule

102515. Simplest unit of polymers?

Answer: Monomer

102516. The process by which polymers and plastics made from monomers?

Answer: Polymerisation

102517. Study of artificial fibre is called?

Answer: Polymer Chemistry

102518. Examples of natural polymers are?

Answer: Cellulose; silk etc.

102519. Paper is an example of?

Answer: Cellulose

102520. Examples of artificial polymers are?

Answer: Rayon; Nylon; Teflon etc.

102521. Father of Polymer Chemistry?

Answer: Hermann Staudinger

102522. Father of Polymer Physics?

Answer: Hermann Mark

102523. Plastics are generally?

Answer: Synthetic polymers

102524. First artificial plastic?

Answer: Bakelite

102525. Bakelite is made from?

Answer: Phenol and formaldehyde

102526. Plastic will dissolve in?

Answer: Chloroform

102527. Poisonous gas produced on burning of plastic?

Answer: Dioxin

102528. Chemical name of Teflon?

Answer: Polytetra fluoro ethylene

102529. PVC stands for?

Answer: Poly Vinyl Chloride

102530. The birth place of Rubber?

Answer: Brazil

102531. Constituent of natural rubber?

Answer: Isoprene

102532. Rubber is an example of?

Answer: Polymer

102533. The word 'rubber' was first coined by?

Answer: Joseph Priestly

102534. Heating rubber with sulphur for the betterment of its properties like tensile strength; hardness; elasticity etc. is called as?

Answer: Vulcanisation

102535. Vulcanisation was developed by?

Answer: Charles Good Year

102536. Ordinary rubber is?

Answer: Thermoplastic

102537. First synthetic rubber?

Answer: Neoprene

102538. Styrene Butadiene Rubber; Neoprene; Thiokole are the examples of?

Answer: Synthetic rubber

102539. Rubber is soluble in?

Answer: Benzene

102540. Structure of Benzene was discovered by:?

Answer: August Kekule

102541. Cement was invented by?

Answer: Joseph Aspidin

102542. Mixture of aluminates and silicates of calcium is?

Answer: Cement

102543. Setting of cement is due to the hydration of calcium silicates and?

Answer: Calcium aluminates

102544. Setting time of cement is controlled by adding?

Answer: Gypsum

102545. Sodium hydroxide Used to make?

Answer: washing soap

102546. Potassium hydroxide Used to make?

Answer: toilet soap

102547. Olive oil Used to make?

Answer: baby soap

102548. The process of Extraction of soap from glycerine is?

Answer: Salting out

102549. Soaps making procedure is known as?

Answer: Saponification

102550. Transparent oil contents are?

Answer: Glycerol and caster oil
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