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Sticky Note
Slow cooling of crystal yield to produce?
  1. Small crystal
  2. Large crystal
  3. Both a and b
  4. Electrons
Explanation

When a substance is cooled slowly, only a limited number of nucleation sites are formed.

As a result, larger crystals are produced.

The better crystals tend to be obtained on slow cooling than on rapid cooling

  • because rapid cooling induces the formation of many nucleation sites
  • fast cooling yields small crystals.

Related MCQs

  1. 100 kg
  2. 200 kg
  3. 300 kg
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں

  1. Temporary water connections
  2. Underground and permanent water-supply lines
  3. High-temperature steam lines
  4. Drainage of rainwater only
اس سوال کو وضاحت کے ساتھ پڑھیں

  1. 10–20 minutes
  2. 30–60 minutes
  3. 2–4 hours
  4. 12–24 hours
اس سوال کو وضاحت کے ساتھ پڑھیں

  1. Vertical drop fall
  2. Glacis fall
  3. Montague type fall
  4. Inglis fall
اس سوال کو وضاحت کے ساتھ پڑھیں

آکسیجن زیادہ تر عناصر کے ساتھ عمل کرکے دو عنصری مرکبات بناتی ہے جنہیں کیا کہتے ہیں؟
  1. Bases
  2. Oxides
  3. Acids
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں

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