Basic chemistry GK

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Basic chemistry GK

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Question 1 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
The main active constituent of tea and coffee is
A
nicotine
B
chlorophyll
C
caffeine
D
aspirin
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Question 2 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
What are the number of moles of CO2 which contains 16 g of oxygen?
A
0.5 mole
B
0.2 mole
C
0.4 mole
D
0.25 mole
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Question 3 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
The number of moles of solute present in 1 kg of a solvent is called its
A
molality
B
molarity
C
normality
D
formality
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Question 4 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
The maximum number of isomers for an alkene with molecular formula C4H8 is
A
5
B
4
C
2
D
3
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Question 5 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER]
The most extensive, commercially useful source of thorium as monazite sand occurs in India at
A
Orissa coast
B
Travancore coast
C
West Bengal coast
D
Gujarat coast
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