ऐल्डिहाइड, कीटोन एवं कार्बोक्सिलिक अम्ल | JEE | Class 12 रसायन विज्ञान | 2 PM Class By Ram Sir |L9

एल्डोल संघनन|ऐल्डिहाइड, कीटोन एवं कार्बोक्सिलिक अम्ल|क्रियाविधि|Cross एल्डोल|अन्त अणुक ऐल्डॉल अभिक्रिया|OMR

D and F Block Elements Lecture 2 - Potassium Permanganate | JEE/NEET/Class 12 Chemistry Revision

D and F Block Elements Lecture 2 - Potassium Permanganate | JEE/NEET/Class 12 Chemistry Revision

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9. M a r k s"N u m b e r o f S t u d e n t s"0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51 Draw a freque

The following data : 2, 5, 15, 25, 20, 12, 8, 7, 6, 16, 21,17, 30, 32, 23, 40, 51, 15, 2, 9, 57, 19, 25 is grouped in the classes 0 –5, 5 –10, 10 –15 etc. Find the frequency of the class 20 –25.

Railway fares of 1st, 2nd and 3rd class between two stations were in the ratio of 8 6 : 3. The fares of 1st and 2nd class were subsequently reduced by 1/6a n d1/(12) respectively. If during a year the ratio 12 between the passengers of 1st, 2nd and 3rd classes was 9 :12 : 26 and the total amount collected by the sale of tickets was Rs, 1088, then find the collection from the passengers of 1st class. R s .260 b. R s .280 c. R s .300 d. R s .320

The above Venn diagram represent the students who play 3 sports M, N and L in a class Total number of students who play N & L but not M game is: Options are (a) 15 (b) 68 (c) 9 (d) 12.