Overlaping अतिव्यापन | रासायनिक बंध | Lec -2 | Chapter -4 | 11th, Chemistry |By Vikram sir |Doubtnut

Class 12 Chemistry | Chapter 4 | Chemical Kinetics | Important Questions | CBSE Boards Revision | Part 2

Read the following information carefully to answer the questions that follow. In a survey of 25 students, it was found that 15 have taken Mathematics. 12 have taken Physics and 11 taken Chemistry, 5 have taken Mathematics and Chemistry, 9 have taken Mathematics and Physics, 4 have taken Physics and Chemistry and 3 have taken all the three subjects. The number of students who have taken only Physics, is (a)2 (b)3 (c)5 (d)6

In a survey of 25 students, it was found that 15 had taken Mathematics, 12 had taken Physics and 11 had taken Chemistry, 5 had taken Mathematics and Chemistry, 9 had taken Mathematics and Physics, 4 had taken Physics and Chemistry and 3 had taken all the three subjects. Consider the following statements : 1. The number of students who had taken only one subject is equal to the number of students who had taken only two subjects. 2. The number of students who had taken at least two subjects is four times the number of students who had taken all the three subjects. Which of the above statements is/are correct ?

Class 12 Chemistry | Chapter 11 Alcohol, Phenol and Ethers | Important Questions and Quick Revision| Part 2

The sum of the series 1 + 2 xx 3 + 3 xx 5 + 4 xx 7+ ...upto 11th term is

Given question are based on the general English alphabet. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z If the first five letters of English alphabet are reversed, so are the next six, so are the next seven and so are the next eight then which letters will be 11th to the right of 7th letter from the left? 1) J 2) K 3) L 4) M 5) None of these

The sum of the the series 1+2x3+3x5+4x7+.... Upto 11^(th) term is

The average of twelve numbers is 55.5. The average of the first four numbers is 53.4 and that of the next four numbers is 54.6. The 10th number is greater than the 9th number by 3 but lesser than the 11th and 12th numbers by 2 and 3, respectively. What is the average of the 10th and the 12th numbers? बारह संख्याओं का औसत 55.5 है | पहली चार संख्याओं का औसत 53.4 है तथा अगली चार संख्याओं का औसत 54.6 है | 10वीं संख्या 9वीं संख्या से 3 अधिक है लेकिन 11वीं और 12वीं संख्याओं से क्रमशः 2 और 3 कम है | 10वीं और 12वीं संख्याओं का औसत ज्ञात करें |

Reverse the second half of the given English alphabet and answer the question based on it. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Which letter will be 11th letter to the right of 6th letter from the left? 1) C 2) Q 3) Y 4) W 5) None of these