Ascorbic acid contains?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin C
(d) Vitamin D
Empirical formula of ascorbic acid is?
(a) C3H4O3
(b) C4H5O4
(c) C5H6O5
(d) C6H7O6
During combustion, sole products are__________?
(a) CO and H20
(b) CO2and H2O
(c) CO and H2O2
(d) All of them
During combustion analysis, H2O is absorbed by?
(a) KOH
(b) Mg(CIO4)2
(c) Both a and b
(d) None of them
Empirical formula of benzene is?
(a) CH
(b) CHO
(c) C6H6
(d) CH2O
Empirical formula of glucose is?
(a) CH
(b) CHO
(c) C6H6
(d) CH2O
Atomic mass, formula mass or ionic mass of substance expressed in grams is called?
(a) Avogadro’s no.
(b) Molar volume
(c) Molar mass
(d) Mole
Calculate the mass of 10 moles of MgSO4?
(a) 0.12 grams
(b) 0.012 grams
(c) 0.0012 grams
(d) 0.00012 grams
1.008 gram of hydrogen is equal to?
(a) 1 mole of H
(b) 6.02×1023 atoms of H
(c) Both a and b
(d) None of them
How many times sodium is heavier that atom of hydrogen?
(a) 21 times
(b) 22 times
(c) 23 times
(d) 24 times
How many times magnesium is heavier than carbon??
(a) Two times
(b) Three times
(c) Four times
(d) Five times
1 mole of glucose is equal to?
(a) 184 grams of glucose
(b)182 grams of glucose
(c) 180 grams of glucose
(d) None of them
Back to Main Menu (Current Affairs MCQs).