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Doctors Medicines MCQs Q&A

  1. P
  2. Q
  3. R
  4. S
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1 Answers

Option 1 : P

Explanation:-

Chemical reaction: The chemical reaction is said to be the change that brings new products.

Displacement reaction:

  • The reaction in which cation or anion from the reactant side is displaced to the products is called displacement reaction.
  • A displacement reaction is also known as a metal displacement reaction.
  • Metals of high reactivity displace the metals of low reactivity from their anions.

Example- 2K + CuSO4  → K2SO4 + Cu

Metal reactivity series:

The metals are arranged in increasing order of their reactivity which is known as the metal reactivity series. 

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Double displacement reaction: The reaction in which both cation and anion is displaced to the products is called double displacement reaction.

Example- NaOH + HCl → NaCl + H2O

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Related Questions

In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1 - Along the road walked an old man.   P - He was white-headed as a mountain, bowed in the shoulders, and faded in general aspect.   Q- He wore a glazed hat, an ancient boat-cloak, and shoes; his brass buttons bearing an anchor upon their face.   R - One would have said that he had been, in his day, a naval officer of some sort or other   S - In his hand was a silver-headed walking-stick, which he used as a veritable third leg, perseveringly dotting the ground with its point at every few inches’ interval.   6 - Before him stretched the long, laborious road, dry, empty, and white.?
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In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/ passage and find out which of the four combinations is correct. 1. Every Sunday morning I take a light jog around a park near my home.  P. Each time I jog by this lake, I see the same elderly woman sitting at the water’s edge with a small metal cage sitting beside her. Q. This past Sunday my curiosity got the best of me, so I stopped jogging and walked over to her.  R. As I got closer, I realized that the metal cage was, in fact, a small trap.  S. There’s a lake located in one corner of the park.   6. There were three turtles, unharmed, slowly walking around the base of the trap?
1 Answers 5 Views