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101.

Give examples of food preservatives.

Answer» Table, salt, Sugar, Vegetable oils, `C_(6)H_(5)COONa` etc.
102.

Which one of the following is not a broad spectrum antibiotic ?A. TetracyclineB. ChlormyceticC. PenicillinD. None of these

Answer» Correct Answer - C
103.

Broad spectrum antibiotic is that whichA. ProcaineB. PlasmoquinC. AspirinD. Chloramphenicol

Answer» Correct Answer - D
104.

Passage 1 Synthetic detergents are cleansing agents which have all the propeties of soaps but they actually do no contain any soap. These can be used in both hard as well as soft water as they give foam even in hard water. All the detergents are not biodegadable and hence cause water pollution in rivers and other water ways. 2. Which of the following are cationic detergents ?A. Sodium lauryl sulphateB. Pentaerythritol monosterateC. Cetyl trimethyl ammonium bromideD. Sodium tripolyhosphate

Answer» Correct Answer - C
105.

Which of the following is an antibiotic-A. aspirinB. chloramphenicolC. veronalD. foristal

Answer» Correct Answer - B
106.

Which of the following is a constituent of soap-A. sodium stearateB. sodium salicylateC. sodium butyrateD. sodium benzenesulphonate

Answer» Correct Answer - A
107.

How many of the following are preservatives ? sodium stearate, sodium acetate, sodium benzoate, sodium sulphite, sodium metabisulphite, sodium sulphate, sodium thiosulphate.A. Statement-1 is True, Statement-2 is True , Statement-2 is the correct explanation for statement 1B. Statement-1 is True, Statement-2 is True , Statement-2 is not a correct explanation for statement 1C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True.

Answer» Correct Answer - 2
Two. Sodium benzoate and sodium metabisulphite.
108.

For which of the following purposes sodium benzoate is usedA. an antioxidantB. an analgesicC. a tranquilizerD. a food preservative

Answer» Correct Answer - D
109.

Among the following which is artificial sweetening agent-A. sucroseB. lactoseC. sucraloseD. cellulose

Answer» Correct Answer - C
110.

Tetracylin, erythromycin and chloramphy areA. bactericidalB. bactericidal antibiorticC. antiviral drugsD. antimalerial drugs

Answer» Correct Answer - B
111.

Sleeping pills are recommended by doctors to the patients suffering from sleeplessness but is not advisable to take its doses without consultation with the doctor.Why?Consider the effect of tranquilizers or antidepressants on the nervous system.

Answer» Sleeping pills contain drugs that may be tranquilizers or antidepressants.They affect the nervous system,relieve drugs,stress,irritability or excitement.But they should strictly be used under the supervision of a doctor.If not,the uncontrolled and over dosage can cause harm to the body and minf because in higher dises these drugs act as poisons.
112.

Sleeping pills are recommended by dictors to the patients suffering from sleeplessness but it is not advisable to take its doses without consultation with doctor. Why?

Answer» Drugs in higher dosage may produce harmful effects and can act as poison.
113.

Which of the follwing is /are sedative?A. ValiumB. PebicillnC. perhydrolD. Dettol

Answer» Correct Answer - A
114.

Define chemotherapy.

Answer» Chemotherapy is a branch of chemistry which deals with treatment of diseases using chemicals.
115.

What problem arises in using alitame as artificial sweetener ?A. It decomposes when added to the food items.B. It provides a huge amount of calories to the food .C. It is difficult to control the sweetness of food while using it.D. It increases the volume of the contents to a large extent.

Answer» Correct Answer - C
Alitame is high ptoency sweetner although , it is more stable than aspartame, the control of sweetness of food is difficult while using it .
116.

Assertion : Chemical messenger gives message to the cell without entering the cell. Reason: Chemical messenger is received at the binding site of receptor proteinsA. Assertion and reason both are correct statement but reason does not explain assertionB. Assertion and reason both are correct and reason explains the assertionC. Both assertion and reason are wrong statementD. Assertion is correct statement reason is wrong statement

Answer» Correct Answer - B
Reason is the correct explanation of the assertion.
117.

Name an artificial sweetener which is derivative of sucrose .A. SaccharineB. SucroloseC. SucrobenzamideD. Aspartame

Answer» Correct Answer - B
Sucrolose is trichloro derivative of sucrose . Its appearance and taste are like sugar .
118.

Assertion : Receptor proteins show selectivity for one chemical messenger over the other. Reason: Chemical messenger binds to the receptor site and inhibits its natural function.A. Assertion and reason both are correct statement but reason does not explain assertionB. Assertion and reason both are correct and reason explains the assertionC. Both assertion and reason are wrong statementD. Assertion is correct statement reason is wrong statement

Answer» Correct Answer - D
Correct reason. Chemical messenger binds the receptor site and gives the message to the cell without entering the cell.
119.

_______ are produced when a drug binds to more than one type of receptor

Answer» Correct Answer - Side effects
120.

Assertion (A) Chemical messenger gives message to the cell without entering the cell. Reason (R) Chemical messenger is received at the binding site of receptor proteins.A. Assertion and reason both are correct statements but reason does not explain assertion.B. Assertion and reason both are correct and reason explains the assertion.C. Both assertion and reason are wrong statements.D. Assertion is correct statement reason is wrong statement.

Answer» Correct Answer - B
Assetion and reason both are correct and reason explains the assertion. Chemical messenger gives message to the cell without entering the cell because it is received at the binding site of receptor proteins.
121.

Assertion (A) Receptor protein show sectivity for one chemical messenger over the other. Reason (R) Chemical messenger binds to the receptor site and inhibits its natural function.A. Assertion and reason both are correct statements but reason does not explain assertion.B. Assertion and reason both are correct and reason explains the assertion.C. Both assertion and reason are wrong statements.D. Assertion is correct statement reason is wrong statement.

Answer» Correct Answer - D
Assertion is correct statement reason is wrong statement. Correct reason Chemical messenger binds the raceptor site and gives the message to the cell with out entering the cell.
122.

Which of the following is not true about antifertility drugs. ?A. Birth control pills contain a mixture of synthetic estorgen and progesterone derivatives.B. Both compounds i.e., estrogen and progesterone are vitamins .C. Progestrone is supposed to suppress ovulation.D. Norethindrone is an example of synthetic progesterone derivative.

Answer» Correct Answer - B
Estrogen and progesterone are hormones .
123.

Given example of antifertility drugs.

Answer» Norethindrone, Novestrol.
124.

Assertion (A) All chemicals added to food items are called food preservatives. Reason (R) All these chemicals increase the nutritive value of the food.A. Assertion and reason both are correct statement but reason does not explain assertionB. Assertion and reason both are correct and reason explains the assertionC. Both assertion and reason are wrong statementD. Assertion is correct statement reason is wrong statement

Answer» Correct Answer - C
Correct assertion. Chemicals which are used to protect food against bacteria, yeasts and moulds are called food preservatives.
Correct reason. Preservatives do not increase the nutritive value of food.
125.

Assertion : Chemicals added to foods for increasing their shelf life are called preservatives. Reason : Natural sweetners like sucrose and artificial sweetners like saccharin are commonly used as food preservatives.A. If both assertion and reason are true and reason is the correct explanation of assertion .B. If both assertion and reason are true but reason is not the correct explanation of assertion .C. If assertion is true but reason is false.D. If both assertion and reason are false.

Answer» Correct Answer - C
Sweeteners are added to impart swwetness to the food. Sodium benzoate , table salt, vegetable oils etc. Are some commonly used preservatives .
126.

Assertion (A) : All chemicals added to food items are called food preservatives. Reason (R) : All these chemicals increase the nutritive value of the food.A. (A) and (R ) both are correct statement but reason does not explain (A)B. (A) and (R ) both are correct statements and (R ) explains the (A)C. Both (A) and (R ) are wrong statementD. (A) is correct statement and (R ) is wrong statement

Answer» Correct Answer - C
Chemicals added to food items in order to prevent spoilage of food due to microbial growth are called food preservatives. Preservatives do not increase the nutritive value of the food.
127.

Assertion (A) All chemicals added to food items are called food preservatives. Reason (R) All these chemicals increase the nutritive value of the food.A. Assertion and reason both are correct statements but reason does not explain assertion.B. Assertion and reason both are correct and reason explains the assertion.C. Both assertion and reason are wrong statements.D. Assertion is correct statement reason is wrong statement.

Answer» Correct Answer - C
Both assertion and reason are wrong statement . Correct assertion Chemicals which are used to protect food against bacteria, yeasts and moulds are called food preservatives
Correct reason Presenvatives do not increase the nutritive values of food.
128.

What are antifertility drug?Give example.

Answer» Antifertilly drugs:These are birth control pills and contain a mixture of synthetic estogen and progesterone derivatives.E.g:Norethindrone,Enthynylestradiol(novestrol)
129.

(i)Why do we require artificial sweetening agents ? (ii)Sugar is the main source of energy as it produces energy on metabolic decomposition. But these days low calorie drinks are more popular, why ?

Answer» To reduce calorie intake and to protect teeth from decaying, we need artificial sweeteners.
130.

What are the main categories of food additives?

Answer» The following are the categoties of food additives
i) Food colours
ii)Flavours and sweetners
iii) Fat Emulsifiers and stabilising agents oxidants
iv)Anti oxidants
v)Flour improvers-antistalling agents and bleaches
vi)Preservatives
vii)Nutritional supplements such as minerals,vitamins and aminno acids.
131.

Why chemicals are added to food?

Answer» Chemical are added to food i)preservation ii) enhancing their iii) adding nutritive value in them.
132.

Name different catagories of food additives.

Answer» The following are the catagories of food additives.
i)Food colours
ii)Flavours and sweetners
iii)Fat Emulsifiers and stablising agents
iv)Anti oxidants
v)Flour improves-antistaling agents and bleaches
vi) Preservatives
vii)Nutritional supplements such as minerals,vitamins and amino acids.
133.

Why do we require arificial sweetening agents?

Answer» 1)Artificial sweetening agents are very useful to diabetic persons.
2)These decrease the calorific in take and at the same time sevral times sweeter than surcose.
3) These are harmless.
134.

What are artificail sweerening agents?Give example.

Answer» The chemical substance which are used instead of sucrose (or) surger are called artificial sweetening agents.E.g:Aspartane,Alitame,saccharin.These desease the calorific intake and at the same time sevral times sweeter than surcose.
135.

Salvarsan is arsenic containing drug which was first used for the treatment of _____A. syphilisB. typhoidC. meningitisD. dysentry

Answer» Correct Answer - A
Salvarsan was the first effective treatment discovered for syphilis.
136.

Assertion `:` Sulpha durgs contain sulphonamide group. Reason `:` Salvarsan is a sulpha drug.A. If both assertion and reason are true and reason is the correct explanation of assertion .B. If both assertion and reason are true but reason is not the correct explanation of assertion .C. If assertion is true but reason is false.D. If both assertion and reason are false.

Answer» Correct Answer - C
Salvarsan in an antibacterial but does not contain sulphonamide group.
137.

Assertion : Supha drug contain sulphonamide group Reason: Salvarsan is a sulpha drugA. Assertion and reason both are correct statement but reason does not explain assertionB. Assertion and reason both are correct and reason explains the assertionC. Both assertion and reason are wrong statementD. Assertion is correct statement reason is wrong statement

Answer» Correct Answer - D
Correct reason. Salvarsan is an antibacterial but does not contain sulphonamide group
138.

Statement-1. Cimetidine is an antacid. Statement-2. It prevents the interaction of histamine thereby producing less hydrochloric acid in the stomach.A. Statement-1 is True, Statement-2 is True , Statement-2 is the correct explanation for statement 1B. Statement-1 is True, Statement-2 is True , Statement-2 is not a correct explanation for statement 1C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True.

Answer» Correct Answer - A
139.

Why do soaps not work in hard water ?

Answer» Hard water contains calcium and magnesium salts. Therefore, in hard water, soaps get precipitated as calcium and magnesium soaps which being insoluble stick to the clothes as gammy mass
140.

Soaps on reaction with hard water forms insoluble scum due to the formation ofA. NaClB. `CaCl_(2)`C. `C_(17)H_(35)COONa`D. `(C_(17)H_(35)COO)^(2)Ca`

Answer» Correct Answer - D
141.

Why do soaps not work in hard water?

Answer» In hard water Ca,Mg-siddolved salts are present.`Ca^(+2),mg^(+2)` ions form insoluble Ca,Mg, soaps respectively when sodium(or) potassium soaps are dissolved in hard water.
`underset("soap")(2C_(17)H)_(35)COONa +MgCl_(2) to 2NaCl +underset("Magnesium stearate ( insoluble soap )")((C_(17)H_(35)COO)_(2)Mg)`
1)These insoluble soaps separate as scum in water and are useless as cleaning agent.These are problematic to good washing because the ppt adheres into the fibres of cloth as gummy mass.
2) Hair washed with hard water looks dull.
3) dye does not absorb avenly on cloth washed with soap using hard water due to this gummy mass.
142.

Soaps do not work in hard water containing calcium and magnesium ions becauseA. `Ca^(2+) and Mg^(2+)` ion form insoluble calcium and magnesium salts in the form of scumB. `Na^(+) and K^(+)` present in soap react with `Ca^(2+) and Mg^(2+)` and hinder cleansing processC. a large amount of soap is to be used in presence of ` Ca^(2+) and Mg^(2+)`D. scum formed by combination of `Na^(+),Ca^(2+) and Mg^(2+)` stick to the cloth and are not removed on agitations.

Answer» Correct Answer - A
`Ca^(+) and Mg^(2+)` ions from insoluble calcium and magnesium soaps respectively when sodium or potassium soaps are dissolved in hard water .
`underset("Soap")(2C_(17)H_35)COONa+CaCl_(2) to underset(" Insoluble calcium stearate (soap)")(2NaCl+(C_(17)H_(35)COO)_(2)Ca)`
These insoluble soaps separate as scum in water and are useless as cleansing agent .
143.

Which of the following is not a true statement about the detergents?A. Anionic detergents are sodium salts of sulphonated long chain alcohols or hydrocarbons.B. Cationic detergents are quarternary ammonium salts of amines with acetates, chlorides or bromides as an ions.C. Non-ionic detergents do not contain any ion in their constitution.D. Detergents containing branched hydrocarbons chains are biodegradable .

Answer» Correct Answer - D
Detergents containing branched hydrocarbon chains are non-biodergradable.
144.

Which of the following is an antimicrobial? (i) Antibacterial drug ltbr. (ii) Anitfungal agent (iii) Antiviral agent (iv) Anitparasitic drugA. (i),(iii)B. (ii),(iii)C. (i),(ii),(iii),(iv)D. (i),(ii),(iii)

Answer» Correct Answer - C
Drugs which are used to cure caused by microbles or microorganism such as bacteria, viruses, fungi ete, are called antimicrobials.
An anitmicrobial tents to destroy/prevent development or inhibit the pathogenic action of microbes such as bacteria (antibacterial drugs), fungi (antifungal agents)., virus (antiviral agents), or other parasites (antiparastic drugs) selectively.
145.

Antacids includeA. OmeprazoleB. LansoprazoleC. Sodium bicarbonateD. All of these

Answer» Correct Answer - D
146.

Drugs can be classified on the basis ofA. Pharmocological effectB. Drug actionC. Chemical structureD. All of these

Answer» Correct Answer - D
147.

Name the iodine-based antiseptic obtained from the reaction between ethanol, `I_2` and NaOH.

Answer» Correct Answer - Iodoform (`CHI_3`)
148.

Drawback of excess of hydrogen carbonate taking as antacid isA. It is insolubleB. It can make stomach alkaline and trigger the production of even more acidC. It causes ulcerD. It causes pain and irritation

Answer» Correct Answer - B
149.

Mood elevators pepills areA. analgesicsB. antacidsC. antibioticD. antidepressent

Answer» Correct Answer - D
150.

Tranquilizers are prescribed for curingA. Anxiety, stress, irritabilityB. The growth of microorganismC. Pain, feverD. All of these

Answer» Correct Answer - A