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Which of the following property does not describe a compound?
Anonymous Quiz
16%
It is composed of two or more elements
31%
It is a pure substance.
22%
It cannot be separated into constituents by physical means
31%
It is mixed in any proportion by mass
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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
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How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?
Anonymous Quiz
17%
Precipitation
43%
Sublimation
23%
Chromatography
18%
Cetrifugation
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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
32%
Concentration of a solvent
21%
Concentration of a solute
28%
Concentration of a solution
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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
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Which of the following properties does not describe a compound?
Anonymous Quiz
12%
It is composed of two or more elements
28%
It is a pure substance.
23%
It cannot be separated into constituents by physical means
37%
It is mixed in any proportion by mass
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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
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Which of the following is not a homogeneous mixture?
Anonymous Quiz
26%
Air
32%
Tincture of iodine
18%
Sugar solution
23%
milk
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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)
33%
(i) and (iv)
37%
(ii) and (iii)
14%
(ii) and (iv)
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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.
26%
Atoms are always neutral in nature.
17%
Atoms aggregate in large numbers to form the matter that we can see, feel or touch.
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1 u or 1 amu means
Anonymous Quiz
59%
1/12th mass of C-12 atoms
21%
Mass of C-12 atom
10%
Mass of O-16 atom
9%
Mass of Hydrogen molecule
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Which of the following contains maximum number of molecules?
Anonymous Quiz
44%
19 CO2
19%
1 g N2
18%
1 g H2
19%
1 g CH4
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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
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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
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