A. d-block B. f-block C. Radioactive series D. None of these
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A. d-block elements B. p-block elements C. s-block elements D. f-block elements
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A. The same effective nuclear charge B. The imperfect shielding on outer electron C. The appreciable shielding on outer electrons D. None of these
A. Oxide B. Carbonate C. Nitride D. Hydroxide
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A. Bell metal B. Monel metal C. Wood metal D. Guinea gold
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A. Hard steel B. Cast iron C. Mild steel D. Wrought iron
A. Cu plating B. Zn plating C. Ag plating D. Tin plating
A. Cast iron B. Wrought iron C. Stainless steel D. Mild steel
A. Zn and Ni B. Al C. Zn D. Fe
A. Carbon B. Limestone C. CO D. CO2