CHEMISTRY-IN-EVERYDAY-LIFE-QUIZ-8

CHEMISTRY IN EVERYDAY LIFE QUIZ-8

Dear Readers,

The one subject in NEET which is candidates who can easily attain good marks is Chemistry. That's the reason, often, one doesn’t pay notice and choose to compromise it. But if one wants to rank above others, the tip is to be thorough with NEET chemistry concepts. The understanding of reactions and definite basic understanding is what requires major attention in Chemistry but once done it only gets simpler from there. The main focus on the to-do list should be on getting a hang of the NCERT syllabus of NEET chemistry.

Q1. Which of the following is not antibiotic?

•  Tetracyclin
•  Neomycin
•  Carbomycin
•  Cyclohexane

Solution

Q2.The structure given below is known as

•  Penicillin-F
•  Penicillin-G
•  Penicillin-K
•  Ampicillin

Solution

Q3.  Malachite green is a direct dye for silk and wool. It is prepared by condensing?

•  Benzaldehyde and dimethyl aniline
•  Carbonyl chloride and dimethyl aniline
•  Benzene diazonium chloride with dimethyl aniline
•  None of the above

Solution

Q4. The poisonous gas evolved in Bhopal tragedy from the pesticide plant of Union Carbide Co. was

•  CO
•  Methyl isocyanate
•  Phosgene
•  Chloropicrin

Solution
(b) It was MIC or methyl isocyanate.

Q5.Which of the following is a vat dye and often used in dyeing jeans?

•  Indigo
•  Alizarin
•  Picric acid
•  Crystal violet

Solution
 (a) Vat dyes are insoluble compounds which upon reduction give soluble (leuco form) product. The product may be either coloured or colourless and have affinity for specific fabrics, e.g., indigo.

Q6. Which statement is false?

•  Some disinfectants can be used antiseptics at low concentration
•  Sulphadiazine is a synthetic antibacterial
• Ampicillin is a natural antibiotic
•  Aspirin is analgesic and antipyretic both

Solution

Q7.The formulation of Dettol contains:

•  Chloroxylenol
•  Terpineol
•  Alcohol
•  All of these

Solution
(d) Dettol (antiseptic) is a mixture of 4.8% chloroxylenol +9.9% terpineol and absolute alcohol.

Q8.Which of the following is dye?

•  Methyl orange
•  Orange I
•  Aniline yellow
•  All of These

Solution

Q9.Which of the following is a natural dye?

•  Martius yellow
•  Alizarin
•  Phenolphthalein
•  Orange I

Solution
(b) Dyes are the natural or synthetic chemicals used to impart colour to fabrics, plastics, paper, etc. including food items for their pleasant appearance. Alizarin (orange-red) is extracted from the root of madder plant; also synthesised now-a-days.

Q10. Soaps are classified as

•  Ether
•  Salts of fatty acids
•  Carbohydrates
• None of these

Solution