CBSE Questions for Class 12 Engineering Chemistry Chemistry In Everyday Life Quiz 3 - MCQExams.com

Sodium chloride is used in soap industry for soap's __________ .
  • decomposition
  • removal of hardness
  • precipitation
  • None of the above
Allosteric sites on an enzyme are:
  • those other than drug-active sites
  • those which change the shape of active sites
  • those which don't change the shape of active sites
  • all of the above
Which of the following gases can be used for storage of fresh sample of an oil for a long time?
  • Carbon dioxide or Oxygen
  • Nitrogen or Oxygen
  • Carbon dioxide or Helium
  • Helium or Nitrogen
Saponification of ground nut oil yields glycerol and:
  • palmitic acid
  • sodium arachidate
  • oleic acid
  • stearic acid
Which one of the following is used as antihistamine?
  • Norethindrone
  • Chloranphenicol
  • Diphenhydramine
  • Omeprazole
Select the correct statement(s).
  • Surface active agents posses surface activity to lower the surface area, i.e., to reduce the surface energy.
  • Detergents possesses the property of surface activity and detergency.
  • All the surfactants are detergents.
  • Soaps are anionic class of surfactant.
Formula of soap is:
  • $$C_{16}H_{32}COO Na$$
  • $$C_{17}H_{35}COO Na$$
  • $$C_{17}H_{33}COO Na$$
  • $$C_{17}H_{36}COO Na$$
The saponification produce:
  • soap
  • oil
  • fatty acid
  • alcohals
In deodorant soaps, the additive added in deodorant is:
  • glycerol
  • stearic acid
  • potassium bicaronate
  • 3, 4, 5-tribromosalicylaldehyde
Commercial detergent contains mainly:
  • $$RCOONa$$
  • $$RONa$$
  • $$RSNa$$
  • $$RSO_3Na$$
Which of the following are used as an antacid to reduce acidity is stomach?
  • Sodium carbonate and magnesium hygroxide
  • Magnesium hydroxide and sodium hydroxide
  • Sodium bicarbonate and calcium hydroxide
  • Sodium bicarbonate and magnesium hydroxide
The additive used in transparent soaps is:
  • glycol
  • pyrol
  • methanol
  • glycerol
Salts of alkylbenzene sulphonates are called:
  • soaps
  • detergents
  • both $$(A)$$ and $$(B)$$
  • None of the above
Assertion: Hard water consumes more soap.
Reason: The ion responsible for cleansing action is precipitated out by $$Ca^{2+}$$ or $$Mg^{2+}$$ ion.
  • Assertion is correct but Reason is wrong.
  • Assertion is correct but Reason is right.
  • Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
  • Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
Which one of the following is employed as a tranquilizer drug?
  • Promethazine
  • Valium
  • Naproxen
  • Mifepristone
Which of the following is used as a tranquilizer?
  • Seconal
  • Luminal
  • Barbituric acid derivatives
  • All of these
The class of drugs used for the treatment of stress is:
  • analgesics
  • antiseptic
  • antihistamine
  • tranquilizers
Which one of the following types of drugs reduces fever?
  • Tranquilizer
  • Antibiotic
  • Antipyretic
  • Analgesic
Which of the following molecular formulas corresponds to that of an unsaturated fatty acid?
  • $$C_{18}H_{35}COOH$$
  • $$C_{16}H_{33}COOH$$
  • $$C_{19}H_{39}COOH$$
  • $$C_{17}H_{35}COOH$$
What is one environmental problem associated with the use of detergents?
  • Global warming
  • Eutrophication
  • Erosion
  • Photochemical smog
The major reason for treating severe emotional disorders with tranquilizers is to:
  • reduce the neurotic syndrome
  • prevent secondary complication
  • prevent destructiveness by the client
  • make the client more amenable to psychotherapy
Which of the following is an appropriate use of an anionic detergent?
  • Dishwashing liquid
  • Pine-o-clean
  • Glass cleaners
  • Powder for front-loading washing machines
Lye is used in soap-making. It is a concentrated solution of which ionic compound?
  • $$NaCl$$
  • $$NaOH$$
  • $$CuSO_4$$
  • $$K_2CO_3$$
An advantage of detergents over soaps is:
  • detergents always contain heads
  • detergents are biodegradable
  • detergents are cheaper to make
  • detergents do not precipitate in hard water
Which of the following is not an essential part of an emulsion?
  • Dissolved salt
  • Water
  • Oil
  • Emulsifier
Soaps cannot be used in hard water because they:
  • contain sodium
  • form precipitates
  • create environmental problems
  • create ozone depletion
What is the role of phosphate ion in a detergent? 
  • It reduces pH of the water
  • It increases pH of the water
  • It removes $$Ca^{2+}$$ and $$Mg^{2+}$$ ions from water that causes hardness
  • It increases its solubility in water
Brine can be used to separate glycerol and soap because:
  • glycerol is more soluble in brine than soap
  • glycerol has a higher boiling point than soap
  • soap forms ionic bonds with brine
  • it is cheap
A good surfactant will have a:
  • hydrophilic tail
  • hydrophilic head and a long hydrophobic tail
  • hydrophobic head and tail
  • hydrophilic head and a short hydrophobic tail
Which of the following would be an appropriate use of a non-ionic detergent?
  • Glass cleaners
  • Toothpaste
  • Liquid hand soap
  • Powder for front-loading washing machines
Which of the following is a soap?
  • $$C_{17}H_{35}C_6H_4SO_3Na$$
  • $$CH_3COONa$$
  • $$C_{17}H_{35}COONa$$
  • $$C_3H_8O_3$$
Which one of the following statement is correct about the given compound?
123712.PNG
  • An anionic surfactant
  • A soap
  • A non-ionic surfactant
  • A cationic surfactant
A quantity of $$PCl_5$$ was heated in $$10 dm^3$$ vessel $$250^0C$$

$$PCl_5$$ g) $$PCl_3$$(g) + $$Cl_2$$ (g)

At equilibrium the vessel contains 0.1 mole of $$PCl_5$$ and 0.2 mole of $$Cl_2$$. The equilibrium constant of the reaction is ?
  • 0.05 
  • 0.02
  • 0.025
  • 0.04
Select correct statement(s).
  • $$^{131}I$$ is used for the treatment of thyroid cancer
  • $$^{59}Co$$ cannot be used for treatment of cancer
  • $$^{33}P$$ is used for treatment of cancer
  • Excessive use of radioactive elements cause cancer
Household detergent cause water pollution.
  • True
  • False
Structures of Paracetamol is: 
Which of the following gases can be used for storage of a fresh sample of an oil for a long time?
  • Carbon dioxide or oxygen
  • Nitrogen or oxygen
  • Carbon dioxide or helium
  • Helium or nitrogen
Which of the following statements is wrong?
  • All the detergents are surfactants.
  • All the soaps are anionic class of detergents.
  • Surfactants possess surface activity whereas detergents possess surface activity as well as cleansing action.
  • All the surfactants are colloidal electrolytes.
The best type of soaps are generally prepared from:
  • linseed oil
  • coconut oil
  • groundnut oil
  • mustard oil
Which of the following are used as an antacid to reduce acidity in stomach?
  • Sodium carbonate and magnesium hydroxide
  • Magnesium hydroxide and sodium hydroxide
  • Sodium bicarbonate and calcium hydroxide
  • Sodium bicarbonate and magnesium hydroxide
Which is used in cancer chemotherapy?
  • Cis-platin
  • Zeisse's salt
  • Both (a) and (b)
  • None of these
Antipyretics are medicinal compounds which :
  • lowers body temperature
  • relieves pain
  • controls malaria
  • can kill other organisms
Which of the following is not a target molecule for drug function in body?
  • Carbohydrates
  • Lipids
  • Vitamins
  • Proteins
Which of the following statements is correct?
  • Some tranquilisers function by inhibiting the enzymes which catalyse the degradation of noradrenaline.
  • Tranquilisers are narcotic drugs.
  • Tranquilizers are chemical compounds, that do not affect the message transfer from nerve to receptor.
  • Tranquilisers are chemical compounds, that can relieve pain and fever.
Polyethylene glycols are used in the preparation of which type of detergents?
  • Cationic detergents
  • Anioinc detergents
  • Non-ionic detergents
  • Soaps
The compound that causes general antidepressant action on the central nervous system belongs to the class of:
  • analgesics
  • tranquilizers
  • narcotic analgesics
  • antihistamines
Muddy water can be purified through coagulation by using :
  • $$\text{common slat}$$
  • $$\text{alums}$$
  • $$\text{sand}$$
  • $$\text{lime}$$
Which of the following is an example of liquid dishwashing detergent?
  • $$CH_3(CH_2)_{10} -CH_2OSO_3^-Na^+$$
The most useful classification of drugs for medicinal chemists is :
  • on the basis of chemical structure
  • on the basis of drug action
  • on the basis of molecular targets
  • on the basis of pharmacological effect
Which of the following are used as food preservative?
  • Table salt
  • Sodium hydrogen carbonate
  • Cane sugar
  • Benzoic acid
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