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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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