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Earn 100

An adult body contains about how many grams of calcium?

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Important Questions on The s-Block Elements

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State:

The compound found in tooth enamel.

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Which of the following statements is false?
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The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
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The element playing significant role in neuromuscular function and interneuronal transmission is :
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Match list-I with list-II :

       
(a) Be (i) Treatment of cancer
(b) Mg (ii) Extraction of metals
(c) Ca (iii) Incendiary bombs and signals
(d) Ra (iv) Windows of X-ray tubes
    (v) Bearings for motor engines.

Choose the most appropriate answer, the option given below :

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Which one of the following statements is correct?
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The function of "Sodium pump" is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump?
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The correct statement(s) among I to III with respect to potassium ions that are abundant within the cell fluids, is/are
I. They activate many enzymes.
II. They participate in the oxidation of glucose to produce ATP.
III. Along with sodium ions, they are responsible for the transmission of nerve signals.
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Match List-I with List-II

  List-I   List-II
(a) Ca(OCl)2 (i) Antacid
(b) CaSO4·12H2O (ii) Cement
(c) CaO (iii) Bleach
(d) CaCO3 (iv) Plaster of paris

Choose the most appropriate answer from the

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The most abundant metal ion present in the human body is
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Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is
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The metal used for making X-ray tube window is:
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A doctor by mistake administers a dilute BaNO32 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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Which salt hydrolyses to a minimum extent?
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Assertion: Barium is not required for normal biological function in human.
Reason: Barium does not show variable oxidation state.
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The slaked lime is prepared by adding water to-