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๐5๐1
non-metal used to preserve food material is:
Anonymous Quiz
19%
Carbon
20%
Phosphorous
11%
Sulphur
50%
Nitrogen
๐7๐ฅ3โค1
pH value less than 7 indicates that the solution is โ
Anonymous Quiz
60%
Acidic
21%
Basic
16%
Neutral
3%
None
๐13๐ฅ4๐ฅฐ1๐1
๐10โค3๐ฅฐ3๐2
An aqueous solution turns the red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
Anonymous Quiz
31%
Hcl
32%
Lime
28%
H2so4
8%
None
๐16๐คฉ5๐1๐ฅฐ1
At what temperature is gypsum heated to form Plaster of Paris?
Anonymous Quiz
13%
35
19%
70
15%
90
53%
100
๐13๐1
Which of the following salts does not contain water of crystallization?
Anonymous Quiz
24%
Blue vitrol
32%
Baking soda
16%
Washing soda
28%
Gypsm
๐ฅฐ8๐4โค3
At what temperature is gypsum heated to form Plaster of Paris?
Anonymous Quiz
9%
35
16%
70
16%
90
59%
100
๐9๐คฉ2
Sodium carbonate reacts with hydrochloric acid produces
Anonymous Quiz
57%
Nacl
11%
H2o
8%
Co2
24%
All
๐11๐ฅ3๐ฅฐ3
Which of the following is a contraceptive?
Anonymous Quiz
27%
Copper -T
20%
Diphgram
17%
Condom
36%
All
๐21๐10๐1