The shape of the orbital with the value of l=2, m=0 is: 
1.  Spherical
2.  Double dumb-bell
3.  Trigonal planar
4.  Square planar
Subtopic:  Shell & Subshell |
 82%
Level 1: 80%+
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Assertion: Neoprene can be further hardened by heating in presence of sulphur. 
Reason: Neoprene contains allylic double bonds which help in introducing sulphur bridges between different polymer chains.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 67%
Level 2: 60%+
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Assertion: Deoxyribose, C5H10O4 is not a carbohydrate. 
Reason: Carbohydrates are hydrates of carbon so compounds which follow Cx(H2O)y formula are carbohydrates.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Level 3: 35%-60%
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Assertion: Aniline does not undergo Friedel-Crafts reaction. 
Reason: Friedel-Crafts is an electrophilic substitution reaction.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 55%
Level 3: 35%-60%
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Assertion: In comparison to ethyl chloride it is difficult to carry out nucleophilic substitution on vinyl chloride. 
Reason: Vinyl group is electron donating.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 51%
Level 3: 35%-60%
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Assertion: Phenol forms 2, 4, 6-tribomophenol on treatment with Br2 in carbon disulphide at 273 K. 
Reason: Bromine polarises in carbon disulphide.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Level 3: 35%-60%
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Assertion: On cooling, the brown colour of nitrogen dioxide disappears. 
Reason: On cooling, NO2 undergoes dimerisation resulting in the pairing of odd electrons of NO2.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 65%
Level 2: 60%+
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