Chap 2 | Lec 7 | तरंग यांत्रिकी | परमाणु संरचना | 11th/ NEET/JEE/ Chemistry |By Vikram sir

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

E2 reactions | Elimination reactions | Reaction Mechanism | JEE MAINS 2020/NEET 2020 | Chemistry

Nucleophilic Substitution | SN2 Reactions | Reaction Mechanism | JEE MAIN 2020/NEET 2020 | Chemistry

NEET 2020 - Revision In 60 Days | Class 11 Thermodynamics Part -2 | Quick Revision | NEET Chemistry

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

Read the given letter number sequence carefully and answer the question given below: J K P D F G H 6 9 2 8 Q E M 7 4 3 Z Y B T 5 4 2 3 In the arrangement of letters and numbers given below, first all the numbers are arranged in the descending order and then all the letters are written in the alphabetical order. Then which letter/ number will be fourth to the left of the 11th element from the left end in the new arrangement? 1) K 2) 3 3) B 4) 1 5) None of these

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The escape velocity of a body from the earth's surface is 11.2km//s . The mass of the moon is (1//81)^(th) of that of earth. The radius of the moon is (1//3.7)^(th) that of earth . Find the escape velocity from moon's surface .

Find: (i) the 20th term of the AP 9, 13, 17, 21, … (ii) the 35 th term of the AP 20, 17, 14, 11,… (iii) the 18th term of the AP sqrt(2), sqrt(18), sqrt(50), sqrt(98),… (iv) the 9th term of the AP (3)/(4), (5)/(4), (7)/(4), (9)/(4),.... (v) the 15th term of the AP -40, -15, 10, 35,....