April 1, 2024
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April 1, 2024
April 1, 2024
Which of the following property does not describe a compound?
Anonymous Quiz
16%
It is composed of two or more elements
32%
It is a pure substance.
22%
It cannot be separated into constituents by physical means
31%
It is mixed in any proportion by mass
April 1, 2024
When two liquids do not mix, they form two separate layers and are known as
Anonymous Quiz
13%
Miscible liquids
59%
Immiscible liquids
19%
Saturated liquids
9%
Super saturated liquids
April 1, 2024
How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?
Anonymous Quiz
17%
Precipitation
42%
Sublimation
23%
Chromatography
18%
Cetrifugation
April 1, 2024
The amount of solute present per unit volume or per unit mass of the solution/solvent is known as
Anonymous Quiz
19%
Composition of solute
33%
Concentration of a solvent
21%
Concentration of a solute
27%
Concentration of a solution
April 1, 2024
According to the definition of pure substance, which of the following is a pure substance?
Anonymous Quiz
14%
Ice
23%
Mercury
13%
Iron
49%
All of these
April 2, 2024
Which of the following properties does not describe a compound?
Anonymous Quiz
11%
It is composed of two or more elements
29%
It is a pure substance.
23%
It cannot be separated into constituents by physical means
37%
It is mixed in any proportion by mass
April 2, 2024
In the tincture of iodine, find the solute and solvent?
Anonymous Quiz
24%
alcohol is the solute and iodine is the solvent
50%
iodine is the solute and alcohol is the solvent
15%
any component can be considered as solute or solvent
11%
tincture of iodine is not a solution
April 2, 2024
Which of the following is not a homogeneous mixture?
Anonymous Quiz
26%
Air
32%
Tincture of iodine
18%
Sugar solution
24%
milk
April 2, 2024
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April 2, 2024
Which of the following correctly represents 360g of water?
(i) 2 moles of water (ii) 20 moles of water (iii) 6.022 × 1023 molecules of water (iv) 1.2044 × 1025 molecules of water
(i) 2 moles of water (ii) 20 moles of water (iii) 6.022 × 1023 molecules of water (iv) 1.2044 × 1025 molecules of water
Anonymous Quiz
16%
(i)
32%
(i) and (iv)
37%
(ii) and (iii)
14%
(ii) and (iv)
April 3, 2024
Which of the following statements is not true about an atom?
Anonymous Quiz
36%
Atoms are not able to exist independently.
21%
Atoms are the basic units from which molecules and ions are formed.
27%
Atoms are always neutral in nature.
17%
Atoms aggregate in large numbers to form the matter that we can see, feel or touch.
April 3, 2024
1 u or 1 amu means
Anonymous Quiz
60%
1/12th mass of C-12 atoms
21%
Mass of C-12 atom
11%
Mass of O-16 atom
9%
Mass of Hydrogen molecule
April 3, 2024
April 4, 2024
Which of the following contains maximum number of molecules?
Anonymous Quiz
44%
19 CO2
19%
1 g N2
17%
1 g H2
19%
1 g CH4
April 5, 2024
A sample of NH3 molecule irrespective of source contains 82.35% Nitrogen and 17.65% of Hydrogen by mass. This data supports:
Anonymous Quiz
39%
Law of Conservation of Mass
26%
Las of Multiple Proportions
26%
Law of Definite Proportions
9%
Avogadro’s Law
April 5, 2024
An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:
Anonymous Quiz
37%
XY
34%
XY2
22%
X2Y
6%
XY4
April 5, 2024