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Worksheetsbasic concepts of chemistry
Total questions: 20
Worksheet time: 11mins
16 g of oxygen has same number of molecules as in [atomic mass of O=16, C=12, N=14, H=1]
(a) 16 g of CO
(b) 28 g of N2
(c) 14 g of N2
(d) 1.0 g of H2
One atomic mass unit (amu) is closest to the mass of:
The oxygen-16 nucleus
The carbon-12 nucleus
6.022 x 1023 atoms of hydrogen
One proton
The unit of amount of substance is:
ampere
second
mole
kilogram
Which of the following is not organic compound?
Methanol
2,2-dimethylbutane
Sodium hydroxide
Ethene
Which of the following is alkyne?
C2H2
C4H8
C6H12
C5H12
What is the name of the following alkenes?
2,3-dimethylbut-3-ene
2,2-dimethylprop-3-ene
2,3-dimethylbut-2-ene
2,2-dimethylprop-2-ene
General formula for alkyne is…
CnH2n+2
CnH2n
CnH2n-2
CnH2n+1
What is the name of the following structure?
1,1,1-triethylbut-2-yne
4,4,4-triethylbut-2-yne
2,2-diethylhex-4-yne
4,4-diethylhex-2-yne
From the following, which two compounds are considered alkenes?
1 and 2
2 and 3
3 and 4
3 and 5
What is a functional group?
Atoms or group of atoms that give specific characteristics to a molecule
Group of molecules that make up a group of atoms
Group of molecules that give specific characteristics to an atom
Group of atoms that give specific characteristics to an element
Which represents the electronic configuration of Carbon atoms at ground state?
The maximum number of single covalent bonds held by a carbon atom in organic compound is___________.
2
3
4
5
The elements that are characterized by the electronic structure ns2, np6
noble
representative
transion
inner transiotion
the element its electronic configuration is
noble
transition
represintative
inner transition
the element that its electronic configuration 1s2 is located in
s block
p block
d block
f block
