Physics-
General
Easy
Question
A ball is rolled off the edge of horizontal table at a speed of 4m/sec. It hits the ground after 0.4 second. Which statement given below is true :
- It hits the ground at a horizontal distance 1.6 m from the edge of the table.
- The speed with which it hits the ground is 4.0 m/sec.
- Height of the table is 0.4 m.
- It hits the ground at an angle of 60
to the horizontal.
to the horizontal.
The correct answer is: It hits the ground at a horizontal distance 1.6 m from the edge of the table.
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A bullet is fired from a cannon with velocity 500 m/s. If the angle of projection is 15 and g = 10 m/s2 Then the range is :
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The typical reaction of benzene and other aromatic compounds are electrophilic substitution. Presence of electron donating group activates the ring towards electrophilic substitution, while presence of electron withdrawing group deactivates the ring towards electrophilic substitution but at the same time activates the ring towards nucleophilic substitution. Some groups are predominantly meta-directing and all of these are deactivating. Except halogen, most of the O– and P– directing groups are activating groups.
Which of the following compound is not formed.
X represents mixture of organic compounds. The mixture does not contain.
The typical reaction of benzene and other aromatic compounds are electrophilic substitution. Presence of electron donating group activates the ring towards electrophilic substitution, while presence of electron withdrawing group deactivates the ring towards electrophilic substitution but at the same time activates the ring towards nucleophilic substitution. Some groups are predominantly meta-directing and all of these are deactivating. Except halogen, most of the O– and P– directing groups are activating groups.
Which of the following compound is not formed.
X represents mixture of organic compounds. The mixture does not contain.
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A third group is least likely to enter between two groups in the meta relationship. This is the result of steric hindrance and increases in importance with the size of the groups on the ring and with the size of the attacking species.
When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
A third group is least likely to enter between two groups in the meta relationship. This is the result of steric hindrance and increases in importance with the size of the groups on the ring and with the size of the attacking species.
When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
Chemistry-General
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A third group is least likely to enter between two groups in the meta relationship. This is the result of steric hindrance and increases in importance with the size of the groups on the ring and with the size of the attacking species.
When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
A third group is least likely to enter between two groups in the meta relationship. This is the result of steric hindrance and increases in importance with the size of the groups on the ring and with the size of the attacking species.
When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
Chemistry-General
Chemistry-
A third group is least likely to enter between two groups in the meta relationship. This is the result of steric hindrance and increases in importance with the size of the groups on the ring and with the size of the attacking species.
When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
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When a Meta-directing group is meta to an ortho-para directing group, the incoming group primarily goes ortho to the meta directing group rather than para.
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Identify Y in the change;
Chemistry-General
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The correct order of reactivity towards electrophilic substitution is
The correct order of reactivity towards electrophilic substitution is
Chemistry-General
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1) 
2) 
3) 
4) 
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1)
2)
3)
4)
Chemistry-General
Chemistry-
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I) 
II) 
III) 
IV) 
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I)
II)
III)
IV)
Chemistry-General
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I) 
II) 
III) 
IV) 
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I)
II)
III)
IV)
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Which is true about the rate of nitration of the following compounds
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II) 
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Sandmeyer reaction involves the formation of
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Chemistry-General
