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POLYCET (2022) Mock Test Acids and Bases - 3
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We are happy to serve you in pandemic time like “COVID19″. Day by day we are working 24/7 to serve you better. In this way, we are being given free mock test series also. we hope they are also useful to you.” COVID19″ వంటి మహమ్మారి సమయంలో మీకు సేవ చేయడం మాకు సంతోషంగా ఉంది. మీకు మంచి సేవ చేయడానికి మేము రోజు 24/7 పని చేస్తున్నాము. ఈ విధంగా, మీకు ఉచిత మాక్ టెస్ట్ సిరీస్ కూడా ఇవ్వబడుతోంది. అవి మీకు కూడా ఉపయోగపడతాయని మేము ఆశిస్తున్నాము.
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ఈ మాక్ పరీక్షలు స్వీయమూల్యాంకనం మరియు అభ్యాసం కోసం మాత్రమే, చట్టపరమైన వివాదాలకు మాత్రము కాదు.
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 20
1. Question
Which of the following chemical is used for making surface smooth
a. Borax
b. Gypsum
c. Plaster of Paris
d. None -
Question 2 of 20
2. Question
Calcium hydroxide is also called as
a. Quick lime
b. Milk of magnesium
c. Dry slaked lime
d. None -
Question 3 of 20
3. Question
Which of the following is correct?
a. Only synthetic indicators are used to identify the nature of solution
b. Indicators are strong acids or strong bases
c. Indicators are weak acids or weak bases
d. Universal indicator gives the same colour at different pH values -
Question 4 of 20
4. Question
Like acids,aqueous basic solutions conduct ————and are identified as electrolytes.
a. Electricity
b. Solar energy
c. Chemical energy
d. None -
Question 5 of 20
5. Question
Which of the following is not true about pH?
a. It indicates the concentration of H+ ions in solutions of less than 1 molar
b. At pH=0,the hydronium ion concentration in 1 molar
c. At pH=0,the hydroxyl ion concentration in 1 molar
d. All -
Question 6 of 20
6. Question
Which of the following is a mild non-corrosive base ?
a. Washing soda
b. Baking soda
c. Baking powder
d. Bleaching powder -
Question 7 of 20
7. Question
Which substance in the following in its aqueous solution reacts with carbonate to give a gas that turn lime water milky?
a. Na2CO3
b. CuSO4
c. HCl
d. KMnO4 -
Question 8 of 20
8. Question
Select a pair of basic salts among the following
a. Sodium chloride and sodium acetate
b. Sodium acetate and sodium bicarbonate
c. Sodium carbonate and sodium sulphate
d. Sodium nitrate and sodium oxalate -
Question 9 of 20
9. Question
Antacids are used
a. To produce acid in stomach
b. To produce water in stomach
c. To neutralize the excess base in the stomach
d. To neutralize the excess acid in the stomach -
Question 10 of 20
10. Question
The aqueous solution of ——–conducts electricity.
a. Ethyle alcohol
b. Acetic acid
c. Acetone
d. Ether -
Question 11 of 20
11. Question
Ions are absent in the following substances
a. Alcohol
b. Glucose
c. Both glucose & alcohol
d. Acids -
Question 12 of 20
12. Question
What is the colour of litmus paper in neutral solution ?
a. Pink
b. Blue
c. Red
d. Purple -
Question 13 of 20
13. Question
Magnesium hydroxide is otherwise called as
a. Milk of magnesia
b. Brine solution
c. A strong acid
d. None -
Question 14 of 20
14. Question
Which of the following are false regarding the acids like HCl, H2SO4, CH3COOH ?
a. All will produce H+ ions in water
b. All will turn blue litmus to red
c. pH of the compounds is less than 7
d. All -
Question 15 of 20
15. Question
The aqueous solution of ——–conducts electricity.
a. Ethyle alcohol
b. Acetic acid
c. Acetone
d. Ether -
Question 16 of 20
16. Question
The result of reaction of sodium hydrogen carbonate with acetic acid gives the gas …
a. Which turns lime water milky
b. It extinguishes burning splinter
c. It dissolves in a solution of sodium hydroxide
d. All -
Question 17 of 20
17. Question
Tooth decay starts when the PH of the mouth is
a. 5.5
b. Greater than 5.5
c. Lower than 5.5
d. None -
Question 18 of 20
18. Question
The petals of these flowers are used as acid-base indicators
a. Hydrangea
b. Petunia
c. Geranium
d. All -
Question 19 of 20
19. Question
Metal oxide+Acid—>?
a. Salt+metal
b. Salt+water
c. Base+water
d. Non-metallic acid+Base -
Question 20 of 20
20. Question
Why is universal indicator a better one than litmus paper ?
a. Litmus paper can only be used for acids
b. Litmus paper can only be used for alkalies
c. Universal indicator goes green if something is neutral
d. Universal indicator is useful for all ranges of PH of the solution