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Earn 100

An adult body contains about how many grams of calcium?
(a)
(b)
(c)
(d)

50% studentsanswered this correctly
Important Questions on The s-Block Elements
MEDIUM
State:
The compound found in tooth enamel.

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Match list-I with list-II :
(a) | (i) | Treatment of cancer | |
(b) | (ii) | Extraction of metals | |
(c) | (iii) | Incendiary bombs and signals | |
(d) | (iv) | Windows of X-ray tubes | |
(v) | Bearings for motor engines. |
Choose the most appropriate answer, the option given below :

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MEDIUM
They activate many enzymes.
They participate in the oxidation of glucose to produce .
Along with sodium ions, they are responsible for the transmission of nerve signals.

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Match List with List
List | List | ||
(a) | (i) | Antacid | |
(b) | (ii) | Cement | |
(c) | (iii) | Bleach | |
(d) | (iv) | Plaster of paris |
Choose the most appropriate answer from the

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A doctor by mistake administers a dilute solution to a patient for radiographic investigations. Which of the following should be the best to prevent the absorption of soluble barium and subsequent barium poisoning?

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Reason: Barium does not show variable oxidation state.

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