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Chemistry in Everyday Life Test - 45

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Chemistry in Everyday Life Test - 45
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  • Question 1
    1 / -0
    Hormone that maintains the blood glucose level within the limit is:
  • Question 2
    1 / -0
    To prevent food from spoilage by microorganism, which substance is used?
    Solution
    The most common classical preservative agents are weak organic acids, for example acetic, lactic, benzoic and sorbic acid. 
    These molecules inhibit the outgrowth of both bacterial and fungal cells and sorbic acid is also reported to inhibit the germination and outgrowth of bacterial spores.
  • Question 3
    1 / -0
    Butylated hydroxyanisole (BHA) is an example for:
    Solution
    Butylated hydroxyanisole (BHA) is an antioxidant consisting of a mixture of two isomeric organic compounds, 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole. 
    The primary use of BHA is as an antioxidant and preservative in food, food packaging, an animal feed, cosmetics, rubber, and petroleum products.

  • Question 4
    1 / -0
    Hydrazine is a constitutent of drugs that are used for the treatment of:
    Solution

    In the first account of the treatment of pulmonary tuberculosis with the hydrazine deri- vatives of isonicotinic acid .

     Hydrazine is used in treatment of tuberculosis, lymph cancer etc.

    Hydrazine compounds can be effective as active ingredients in admixture with or in combination with other agricultural chemicals such as insecticides, miticides, nematicides, fungicides, antiviral agents, attractants, herbicides or plant growth regulators.
  • Question 5
    1 / -0
    Washing soaps produce scum with hard water and not much foam because hard water contains:
    Solution
    Hard water contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates. Ferrous ion may also be present, oxidized to the ferric form. It appears as a reddish-brown stain on washed fabrics and enameled surfaces. Water hardness that is caused by calcium bicarbonates is known as temporary because boiling converts the bicarbonates to the insoluble carbonates, hardness from other salts is called permanent. Calcium and magnesium ions in hard water react with the higher fatty acids of soap to form an insoluble gelatinous curd, thereby causing a waste of the soap.
  • Question 6
    1 / -0
    Which of the following drugs gives relief from anxiety and stress?
    Solution
    Luminal gives relief from anxiety and stress. It is a hypnotic tranquillizer. Luminal is a derivative of barbituric acid.

    Hence, option C is correct.
  • Question 7
    1 / -0
    Some scientists believe that a chemical widely used as a preservative and a colouring agent in foods gets converted to an acid in the stomach, affects the genes and causes cancer in human beings. Identify that substance.
    Solution
    Sodium nitrite and nitrate closely are related chemicals that have been used for centuries to preserve meat. While nitrate itself is harmless, it easily converts to nitrite, which when combined with secondary-amine compounds forms nitrosamines, a powerful cancer-exacerbating chemical. This chemical reaction occurs easily during the frying process.

  • Question 8
    1 / -0
    Detergents are made usually from products obtained by cracking of petroleum, like:
    Solution

    It is obtained from sulphur compounds of benzene.

    Benzene is a raw material for dyes and synthetic detergents, and benzene and toluene for isocyanates MDI and TDI used in making polyurethanes. Manufacturers use xylenes to produce plastics and synthetic fibers. Synthesis gas is a mixture of carbon monoxide and hydrogen used to make ammonia and methanol.

  • Question 9
    1 / -0
    L.S.D causes hallucinations. The full chemical name of this drug is:
    Solution
    (B) Lysergic acid diethylamide
    L.S.D. is a hallucinogic drug. It affects the midbrain, where the sympathetic nervous system is found. The molecular structure of LSD is similar to psilocybin
  • Question 10
    1 / -0
    In the given figure label the parts.

    Solution

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