• Call Us : 03082533000 (WhatsApp)
  • Email Us : TestPointpk.com@gmail.com
Sticky Note
Select the spontaneous reaction among the following: A. Reaction of nitrogen and oxygen B. Emission of α-particles from polonium C. Thermal decomposition of marble D. Burning of paper
  1. Reaction of nitrogen and oxygen
  2. Emission of α-particles from polonium
  3. Thermal decomposition of marble
  4. Burning of paper
Explanation

A spontaneous process or reaction occurs naturally without the continuous input of external energy.

While some spontaneous reactions may require an initial activation energy to get started, they continue on their own once initiated. 

Emission of α-particles from polonium:

  • This is an example of radioactive decay, a nuclear process.
  • Radioactive decay is inherently spontaneous because it is the process by which an unstable atomic nucleus releases energy and radiation to become more stable, and it occurs without external intervention.

Related MCQs

آئوڈین درج ذیل میں سے کس چیز میں حل پذیر ہے؟
  1. Water
  2. Alcohol
  3. Petrol
  4. All of these
اس سوال کو وضاحت کے ساتھ پڑھیں

مندرجہ ذیل میں سے کون سا ٹھوس عمدہ مواد نہیں ہے؟
  1. Glucose
  2. Sodium Chloride
  3. Iodine
  4. Camphor
  5. Both A and B
اس سوال کو وضاحت کے ساتھ پڑھیں

  1. Neutron
  2. Electron
  3. Proton
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں

زنک کو کس قسم کی دھات میں شمار کیا جاتا ہے؟
  1. Alkaline earth metal
  2. Transition metal
  3. Alkali metal
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں

مندرجہ ذیل میں سے کون سی دھات ہے؟
  1. Calcium
  2. Mercury
  3. Limestone
  4. Both A and B
اس سوال کو وضاحت کے ساتھ پڑھیں

All Rights Reserved © TestPointpk.com