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Chemistry in Everyday Life Test - 27

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Chemistry in Everyday Life Test - 27
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  • Question 1
    1 / -0
    Which of the following will not enhance nutritional value of food?
    Solution
    Artificial sweeteners enhance the taste but will not enhance the nutritional value. Whereas minerals, vitamins and amino acid will increase the nutritional value as they are the important constituents of nutrition.
  • Question 2
    1 / -0
    Which of the following is not a target molecule for drug function in body?
    Solution
    The drug targets include carbohydrates, proteins, lipids and nucleic acids.
    Hence, vitamin is not a drug target.
  • Question 3
    1 / -0
    Which of the following statements is not true about enzyme inhibitors?
    Solution
    Enzyme inhibitors bind reversibly and irreversibly.
    They bind reversibly with non-covalent bond, whereas, they bind irreversibly with covalent bond where they change the key amino acid residues needed for enzymatic activity.
    Hence, option C is correct.
  • Question 4
    1 / -0
    Which of the following chemical can be added for sweetening of food items at cooking temperature and does not provide calories?
    Solution
    Sucrose is common sugar. 
    Glucose is a simple sugar. Glucose is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, using energy from sunlight.
    Aspartame is unstable at cooking temperature and hence, it is used in cold drinks and soft drinks.
    Sucralose is a trichloro derivative of sucrose which is stable at cooking temperature and does not provide calories. 

    Hence, option D is the right answer.
  • Question 5
    1 / -0
    Polyethylene glycols are used in the preparation of which type of detergents?
    Solution
    Polyethylene glycols (PEG) are used in the preparation of non-ionic detergents since they contain an OH-OH group, which is reactive and forms non-ionic detergent. Non-ionic detergents do not contain any ions. They are actually esters of high molecular mass alcohols obtained by reaction between polyethylene glycols and stearic acid.
  • Question 6
    1 / -0
     Which of the following is not an antidepressant?
    Solution
    Antidepressants are a class of drugs that reduce symptoms of depressive disorders by correcting chemical imbalances of neurotransmitters in the brain. 
    Chemical imbalances may be responsible for changes in mood and behavior.

    Examples: Iproniazid, Phenelzine and Equanil.

    Salvarsan is antibiotic.
  • Question 7
    1 / -0
    Which of the following is an example of liquid dishwashing detergent?
    Solution
    Non-ionic detergents are used as liquid dish washing detergents. The structure present in B is non-ionic.
  • Question 8
    1 / -0
    Which of the following are the uses of medicines?
    Solution
    Medicines can be used to cure diseases, maintain health and modify body characteristics. 

    Hence option D is the correct answer.  
  • Question 9
    1 / -0
    The average molecular mass of drugs is approximately:
    Solution
    According to Lipinski's rule of 5, a small molecule drug should have its molecular mass less than 500 daltons i.e., 500 g/mol. 
  • Question 10
    1 / -0
    Which category of the synthetic detergents is used in toothpaste?
    Solution
    Synthetic detergents are used in toothpastes. Usually, they contain either a sulfate (SO4)(SO_4) or sulfonate (SO3)(SO_3) head group (which are anions).
    Example: Sodium lauryl ether sulfate (CH3(CH2)11(OCH2CH2)nOSO3Na)(CH_3(CH_2)_{11}(OCH_2CH_2)_nOSO_3Na).
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