Acid Bade Chemistry


01.
True or False: Substances which are sour to taste have acidic ingredients and their
solutions are acids
02.
Name the following: Mixture of several indicators
03.
pOH of acid is between
(a) 0 to 7
(b) 14 to 20
(c) 7 to 14
(d) 0 to 14
04.
HCl (Hydrochloric Acid) produced in stomach helps in_______.
(a) Neutralization
(b) Digestion
(c) Circulation
(d) Excretion
05.
Tooth Enamel, made of Calcium Phosphate is degraded by Acid, causing tooth decay
(a) Calcium Phosphate
(b) Sodium Chloride
(c) Potassium Nitrate
(d) Ammonium Sulphate
06.
True or False: pH + pOH = 16
07.
pH of pure water is _____
(a) 3
(b) 5
(c) 7
(d) 9
08.
Fill in the blanks: Substances which are ____ to taste are bases
09.
Acid Rain have pH _____________
(a) less than 7
(b) greater than 7
(c) less than 14
(d) greater than 14
10.
When metals react with acid, the gas that is released is
(a) hydrogen
(b) chlorine
(c) carbon dioxide
(d) nitrogen
11.
Fill in the blanks: The acidic and basic nature of the compounds can be indicated
by substances called ________
12.
True or False: NaCl is able to conduct electricity in fused state
13.
Sodium bicarbonates is also called ____________
(a) Washing Soda
(b) Baking Soda
(c) Bleaching Powder
(d) Soap
14.
pH of most alkaline solution is _____
(a) 13
(b) 14
(c) 15
(d) 16
15.
When Carbonates & Bicarbonates of Metals react with acid, the gas that is released
is
(a) hydrogen
(b) chlorine
(c) carbon dioxide
(d) nitrogen
16.
Find Odd one out: Phenolphthalein, methyl orange, turmeric, eosin
17.
Fill in the blanks: Common Salt is a product of Neutralization of NaOH and _________
18.
Chemical name of Sodium bicarbonates is ____________
(a) Sodium Nitrogen Carbonate
(b) Sodium Hydrogen Carbonate
(c) Sodium tri phosphate
(d) Sodium Carbonate
19.
True or False: Lime water with butter (with butyric acid) can cure acidity.
20.
Fill in the blanks: Separation of HCl into H+ and Cl- ions
is possible in presence of water. This process is called ____

21.
Sodium carbonates is also called ____________
(a) Washing Soda
(b) Baking Soda
(c) Bleaching Powder
(d) Soap
22.
When metals react with bases, the gas that is released is
(a) hydrogen
(b) chlorine
(c) carbon dioxide
(d) nitrogen
23.
pH of a human body should be between 7.35 to _______
(a) 13.54
(b) 4.75
(c) 7.45
(d) 5.37
24.
Strong odour is due to_______ gas released when bleaching powder is added to Water
(a) CO2
(b) Ammonia
(c) H2S
(d) Chlorine
25.
Acid & Base with each other. This is called ______ reaction
(a) Oxidation
(b) Reduction
(c) Redox
(d) Neutralization
26.
Sodium or Potassium salt of Carboxylic acids are also called as _________
(a) Precipitate
(b) Soda
(c) Salt
(d) Soap
27.
Name the following: The fixed number of water molecules present in the crystal structure.
28.
When crystals are heated, water of crystallization are lost and the substance is
turned into ______ form
(a) Anhydrous
(b) Powder
(c) Vapour
(d) Gaseous
29.
True or False: If a substance is basic in nature, then it turns red litmus to blue
30.
The process of alkaline hydrolysis of oils or fats is known as ________
(a) Saturation
(b) Neutralization
(c) Saponification
(d) Polymerization
Answers:


01. True
02. Universal Indicators
03. (c) 7 to 14
04. (b) Digestion
05. (a) Calcium Phosphate
06. False { The sum is 14 }
07. (c) 7
08. bitter
09. (a) less than 7
10. (a) hydrogen
11. Indicators
12. True
13. (b) Baking Soda
14. (b) 14
15. (c) carbon dioxide
16. turmeric { Rest are synthetic indicators}
17. HCl
18. (b) Sodium Hydrogen Carbonate
19. True
20. Ionization
21. (a) Washing Soda
22. (a) hydrogen
23. (c) 7.45
24. (d) Chlorine
25. (d) Neutralization
26. (d) Soap
27. Water of Crystallization
28. (a) Anhydrous
29. True
30. (c) Saponification