L 02 Imp QueAns परीक्षा में पूछे जाने वाले प्रश्नोत्तर S-Block elements Class 11th Chap 10 In Hindi

दोहरान |प्रतियोगी परीक्षा में पूछे जाने वाले प्रश्न |सारांश

June से पढ़कर Class 11th परीक्षा 2024 में 95% कैसे लाये

Class 11 NEET 2020 - Revision In 60 Days | Hydrogen & S Block Elements -Quick Revision | NEET Chemistry | Important Questions

Class 12 New Session 2024-25? आरंभ बोर्ड 2025 का✅ 11th से 12th में जाने वाले बच्चों के लिए VVI Video

The graph shows the result of 10th class students of a school for 4 years. Study the graph and answer the questions: The number of students appeared for the 10th class exam in the year 2002 is. निम्नलिखित दण्ड आरेख 10 वीं कक्षा के छात्रों का 4 वर्ष का परीक्षा परिणाम दर्शाता है। आरेख का अध्ययन कीजिए और निम्नलिखित प्रश्नों का उत्तर दीजिए : छात्रों की संख्या वर्ष 2002 में 10 वीं कक्षा की परीक्षा में शामिल छात्रों की संख्या बताइए:

Blocks shown in figure have been placed on a smooth horizontal surface and mass of (n + 1)^(th) block is (1)/(20) times the mass of n^(th) block (where n=1,2,3,4,…. ). The first block is given an initial velocity u towards the second block. All collision are head on elastic collisions. If u = 10 m//s then how many blocks must be kept so that the last one acquires speed equal to or greater than the escape speed (=11.0 km s^(-1)) [Take log_(10)((40)/(21))=0.28 and log_(10)(11)=1.04 ]

frequency of a photon emitted due to transition of electron of a cerrain element from L to K shell is found to be 4.2 xx 10^(18) Hz using moseley 's law, find the atomic number of the element , given that the Rydberg's constant R = 1.1 xx 10^(7) m^(-1)

If the first half of the English alphabet is reversed and then next portion of English alphabet is reversed so as ‘A’ takes the position of 'M’ and ‘N’ takes the position of 'Z' then answer the given question. 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 6th to the left of 10th letter to the right of 11th letter from the left? 1) Y 2) N 3) R 4) M 5) None of these

A block of weight 100 N is suspended by copper and steel wires of same cross sectional area 0.5 cm^(2) and, length sqrt(3) m and 1m, respectively. Their other ends are fixed on a ceiling as shown in figure. The angles subtended by copper and steel wires with ceiling are 30^(@) and 60^(@) , respectively. If elongation in copper wire is (Delta l_(C)) and elongation in steel wire is (Delta l_(s)) , then the ratio (Delta l_(C))/(Delta l_(s)) is - [Young's modulus for copper and steel are 1 xx 10^(11) N//m^(2) and 2 xx 10^(11) N//m^(2) , respectively]