2. P, Q and R are three coplanar forces each of magnitude phone 4 N as shown in the adjoining diagram. The point O lies in the same plane
Calculate:
(i) the least moment about 0,
(ii) the greatest moment about 0. [2]
Answers
Answer:
6) The nature of calcium phosphate is present in tooth enamel is
(a) Basic (b) Amphoteric (c) Acidic (d) Neutral
7) Fruits like lemon orange have a sour taste due to the presence of:
(a) Acetic acid b) Citric acid c) Lactic acid d) Oxalic acid
8) Which of the following indicators turn red in an acidic solution?
(a) Phenolphthalein (b) Litmus (c) Turmeric (d) Methyl orang
Explanation:
6) The nature of calcium phosphate is present in tooth enamel is
(a) Basic (b) Amphoteric (c) Acidic (d) Neutral
7) Fruits like lemon orange have a sour taste due to the presence of:
(a) Acetic acid b) Citric acid c) Lactic acid d) Oxalic acid
8) Which of the following indicators turn red in an acidic solution?
(a) Phenolphthalein (b) Litmus (c) Turmeric (d) Methyl orang
Answer:
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