Advertisements
Advertisements
प्रश्न
Calcium phosphate is present in tooth enamel. Its nature is
पर्याय
basic
acidic
neutral
amphoteric
उत्तर
basic
Explanation -
Ca3(PO4)2 is a salt of strong base Ca(OH)2 and weak acid H3PO4.
APPEARS IN
संबंधित प्रश्न
Why does an aqueous solution of an acid conduct electricity?
10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralise it will be:
Write a word equation and then a balanced equation for the reaction taking place when:
Dilute hydrochloric acid reacts with iron filings.
What is a neutralisation reaction?
Write the chemical formula of soda ash?
If you take some distilled water in a test-tube, add an equal amount of acetic acid to it, shake the test-tube well and leave it undisturbed on the test-tube stand, then after about 5 minutes what would you observe?
(A) There is a layer of water over the layer of acetic acid.
(B) A precipitate is setting at the bottom of the test-tube.
(C) Bubbles of colourless gas are coming out of the test-tube.
(D) There is a clear, colourless transparent solutions in the test-tube.
Acids turn blue litmus paper to ______.
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
Copper or brass cooking vessels are coated with tin metal. Why?
______ & ______ metals do not react with HCl or HNO3.
