Reaction in which an element displaces another element from its compound is called ………….
Anonymous Quiz
81%
Displacement
9%
Conservation
6%
Redox
4%
Oxidation
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Reactions in which energy is given out are known as ………….
Anonymous Quiz
81%
Exothermic
19%
Endothermic
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Precipitation reactions produce insoluble ………….
Anonymous Quiz
55%
Salt
14%
Sugar
18%
Glucose
14%
Soln
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A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’.
Anonymous Quiz
27%
Caocl
37%
Caocl2
10%
Cl2
26%
Cao
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How many water molecules does hydrated cal-cium sulphate contain?
Anonymous Quiz
22%
5
35%
10
20%
7
23%
2
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Roots of the plants absorb water from the soil through the process of:
Anonymous Quiz
15%
Diffusion
57%
Transporation
25%
Osmosis
3%
None
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When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:
Anonymous Quiz
17%
Fat
27%
Protein
52%
Starch
4%
Dna
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Name a circulatory fluid in the human body other than blood.
Anonymous Quiz
31%
Platletes
31%
Rbc
31%
Lymph
7%
Wbc
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Breaking of pyruvate using oxygen takes place in the ………
Anonymous Quiz
75%
Mitochondria
13%
Lysosome
8%
Er
5%
Golgi apperatus
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pH value less than 7 indicates that the solution is –
Anonymous Quiz
55%
Acidic
30%
Basic
15%
Neutral
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At what temperature is gypsum heated to form Plaster of Paris?
Anonymous Quiz
20%
35
24%
79
17%
54
39%
100
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What is the percentage of the oxygen in the expired air when a person is resting?
Anonymous Quiz
26%
12
34%
16
20%
24
20%
32
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Work of 14 J is done to move 2 C charge between two points on a conducting wire. What is the potential difference between the two points?
Anonymous Quiz
39%
28v
37%
14v
24%
7v
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