Chemistry - Online Test
Q1. The substance that slows down the reaction without being consumed is known as
Answer : Option B
Explaination / Solution:
Inhibitors inhibits the action of catalyst and hence slows down the rate of reaction.
Q2. Which among the following is adsorbed greatly by activated charcoal?
Answer : Option B
Explaination / Solution:
SO2 due to high polarity and surface area is adsorbed maximum.
Q3.
Critical temperature of carbon dioxide is the highest temperature at which liquid carbon dioxide is observed. Above this temperature
Answer : Option C
Explaination / Solution:
Tc is the highest Temp where a gas can exist in liquid state. Above this no liquid state exist. It is impossible to compress the gas into liquid above critical temperature, no matter what ever amount of pressure is applied.
Q4. In order to decide what course the reaction adopts and make a qualitative prediction about the effect of a change in conditions on equilibrium we use
Answer : Option D
Explaination / Solution:
Le Chaterlier principle is used.
Q5. insulin is a protein which contains _______ amino acids
Answer : Option B
Explaination / Solution:
Insulin contain 51 amino acids
Q6. Alcohols are easily dehydrated in the following order
Answer : Option B
Explaination / Solution:
The rate of dehydration is related to the ease of formation of Carbocation and the energy of the carbocation intermediate. -.
Dehydration involves formation of carbocation 1st and since tertiary carbocation is more stable than secondary and primary therefore 3° is dehydrated first.
The ease of formation of Carbocation is Tertiary>Secondary>Primary.
Q7. When two hydrogen atoms in benzene are replaced by two similar or different monovalent atoms or groups, how many different position isomers are possible?
Answer : Option C
Explaination / Solution:
the three isomers will be ortho(i.e.1,2- or 1,4-disubstituted) , meta(i.e.1,3- or 1,5-disubstituted) and para(1,4-disubstituted)
Q8. In the depression of freezing point experiment, it is found that
Answer : Option C
Explaination / Solution:
Addition of non volatile solute decreases the vapour pressure.
Q9. Which one of the following is used as an anaesthetic in dentistry
Answer : Option A
Explaination / Solution:
Novocaine (or novocain), also known as procaine hydrochloride, is a local anesthetic that is commonly used during dental procedures, like cavity fillings.
Q10. Which one of the following is used to increase blood pressure
Answer : Option D
Explaination / Solution:
Ephedrine is used to increase blood pressure.
