NAT I Medical Chemistry With Answers

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NAT I Medical Chemistry

Sr. # Questions Answers Choice
1 Red lead is PbO Pb<sub>3</sub>O<sub>4</sub> <span style="font-size: 14.44444465637207px;">Pb</span><span style="font-size: 14.44444465637207px;">O</span><sub>2</sub> <span style="font-size: 14.44444465637207px;">Pb</span><sub>4</sub><span style="font-size: 14.44444465637207px;">O</span><sub>3</sub>
2 The principle constituent of pyrex glass is Zn B Pb CI
3 The halide which is not hydrolysed is SiCI<sub>4</sub> SiF<sub>4</sub> CCI<sub>4</sub> PbCI<sub>4</sub>
4 Galena is an ore of Gallium Lead Tin Germanium
5 The substance used as a smoke screen in warfare is SiCI<sub>4</sub> PH<sub>3</sub> PCI<sub>5</sub> Acetylene
6 AI is more reactive than Fe but AI is less easily corroded than Fe Because It is a noble metal Oxygen forms a protective reaction easily with water Iron undergoes reaction easily with water Fe form mono and divalent ions.
7 Alum is not used As a mordant in dyeing As an insecticide In purification of water In tanning of leather
8 Which is true for an element R present in group 13 of the periodic table? It is a gas at room temperature It has oxidation state of +4 It forms R<sub>2</sub>O<sub>3</sub> It forms RX<sub>2</sub>
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