How many water molecules does hydrated cal-cium sulphate contain?
Anonymous Quiz
17%
5
40%
10
23%
7
20%
2
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Nettle sting is a natural source of which acid?
Anonymous Quiz
29%
Metiwanoic acid
38%
Citric acid
28%
Oxalic acid
5%
None
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A non-metal used to preserve food material is:
Anonymous Quiz
24%
Carbon
24%
Phosphorous
45%
Nitrogen
7%
Oxygen
👍7
When calcium oxide is added to water, it completely dissolves in water without forming bubbles. What products are formed in this reaction?
Anonymous Quiz
23%
Cao
60%
Ca(oh)2
11%
So3
5%
None
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Aqua regia is a freshly prepared mixture of concentrated HNO3 and concentrated HCl in the ratio of:
Anonymous Quiz
46%
1:3
31%
2:5
19%
3:4
4%
2:7
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The electronic configuration of an element is found to be 2, 4. How many bonds can one carbon atom form in a compound?
Anonymous Quiz
14%
1
31%
2
35%
4
20%
6
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A carbon compound contains two atoms of carbon. Which name should the carbon compound bear?
Anonymous Quiz
16%
Butane
52%
Ethane
27%
Methane
5%
None
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At what temperature is gypsum heated to form Plaster of Paris?
Anonymous Quiz
19%
90
48%
100
21%
110
12%
120
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