TEST 5 ( X - ACIDS BASES AND SALTS )

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EFFORTS NEVER FAIL

NAME : *

1.The colour of methyl orange indicator in acidic medium is *

1 point

yellow

green

orange

red

2. The colour of phenolphthalein indicator in basic solution is *

1 point

orange

yellow

Pink

blue

3. The Colour of methyl orange in alkali conditions? *

1 point

orange

yellow

red

blue

4. A solution turns red litmus blue, its pH is likely to be *

1 point

5. N2 + O2 -> 2NO–Q in this reaction indicates *

1 point

Exothermic reaction

Endothermic reaction

Electro chemical reaction

All of the above

6.Which of the following substances when mixed together will produce table salt? *

1 point

Sodium thiosulphate and sulphur dioxide

Hydrochloric acid and sodium hydroxide

Chlorine and oxygen

Nitric acid and sodium hydrogen carbonate

7.The aqueous solution of conducts electricity. *

1 point

Ethyl alcohol

acetic acid

acetone

ether

8.Methyl orange are added to a soap solution. The colour of the solution becomes *

1 point

Orange

Yellow

Pink

Remains colourless.

9.What colour would hydrochloric acid (pH=1) turn universal indicator? *

1 point

orange

purple

yellow

red

10.Which one of the following types of medicines is used for treating indigestion? *

1 point

antibiotic

analgesic

antacid

antiseptic

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