Day 524: JEE Mains Chemistry

1. A.
2. B.
3. C.
4. D.

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1. A.
   All of the $\alpha$-particles pass through the gold foil without decrease in speed.
2. B.
   $\alpha$-Particles are deflected over a wide range of angles.
3. C.
   All $\alpha$-particles get bounced back by $180^{\circ}$
4. D.
   $\alpha$-Particles pass through the gold foil deflected by small angles and with reduced speed.

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1. A.
   $Cr < Fe < Co < Cu < Zn$
2. B.
   $Cr < Zn < Co < Cu < Fe$
3. C.
   $Zn < Cu < Co < Fe < Cr$
4. D.
   $Zn < Cr < Fe < Co < Cu$

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1. A.
   $N_{2}$ is unreactive in the condition of atmosphere.
2. B.
   Oxides of nitrogen are unstable.
3. C.
   Reaction between them can occur in the presence of a catalyst.
4. D.
   The reaction is endothermic and require very high temperature

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1. A.
2. B.
3. C.
4. D.

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