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Chemistry MCQs with Explanations

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331ChemistryMedium

The potassium present in plant help the plant to___________________?

Aincrease the resistance against disease

Bripen the seeds and fruits

Cform starch sugar and fibrous material

Dall the above statements are correct

Correct answer

D. all the above statements are correct

Explanation

all the above statements are correct is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

332ChemistryMedium

Main use of salt in diet is to : ___________?

Aincrease the taste

Bease the process of cooking

Cproduce small amount of hydrochloric acid required for digestion

Dinclease solubility of food particles in water

Correct answer

C. produce small amount of hydrochloric acid required for digestion

Explanation

produce small amount of hydrochloric acid required for digestion is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

333ChemistryMedium

Which of the following is most soluble on water?

ABaSO4

BSrSO4

CMgSO4

DCaSO4

Correct answer

C. MgSO4

Explanation

MgSO4 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

334ChemistryMedium

Which one of the following species is not an electrophile ?

AH+

BBF3

CBr+

DNH3

Correct answer

D. NH3

Explanation

NH3 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

335ChemistryMedium

Oobleck is the mixture of _________?

ABaking Soda and Vinegar

BCornstarch and Water

CGram Flour and Water

DCement and Water

Correct answer

B. Cornstarch and Water

Explanation

Cornstarch and Water is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

336ChemistryMedium

Boron is non-netal whereas A1 is metal. It is due to_______________________?

ASmall size

BHigh nuclear charge

CNo authorized justification yet

DBoth A and B

Correct answer

D. Both A and B

Explanation

Both A and B is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

337ChemistryMedium

Free neutron changes into proton with the emission of__________________?

ANeutrino

BElectron

CMeson

DBoth A & B

Correct answer

D. Both A & B

Explanation

Both A & B is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

338ChemistryMedium

Pure metal__________________?

Acorrode rapidly

Bcorrode slowly

Cnone of these

Ddoes not corrode easily

Correct answer

D. does not corrode easily

Explanation

does not corrode easily is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

339ChemistryMedium

Plasma is used in_________________?

AAll of these

BNeon signs

CFluorescent bulb

DLasers

Correct answer

A. All of these

Explanation

All of these is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

340ChemistryMedium

When an atom absorbs energy the lines in the spectrum will appear which are_________________?

AHard to locate

BColourless

CBrighter

DDarker

Correct answer

D. Darker

Explanation

Darker is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

The potassium present in plant help the plant to___________________?

Aincrease the resistance against disease

Bripen the seeds and fruits

Cform starch sugar and fibrous material

Dall the above statements are correct

Correct answer

D. all the above statements are correct

Explanation

all the above statements are correct is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Main use of salt in diet is to : ___________?

Aincrease the taste

Bease the process of cooking

Cproduce small amount of hydrochloric acid required for digestion

Dinclease solubility of food particles in water

Correct answer

C. produce small amount of hydrochloric acid required for digestion

Explanation

produce small amount of hydrochloric acid required for digestion is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.