अम्ल, क्षार एवं लवण - L3 | Revision Special: Part 3 | Class 10 NCERT विज्ञान | 8 AM | Nishtha Ma'am

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Four pipes can fill a reservoir in 15, 20, 30 and 60 hours respectively. The first pipe was opened at 8 am second at 9 am third at 10 am and fourth at 11 am. When will the reservoir be full? 1 pdotmdot b. 2 pdotmdot c. 2. 30 pdotmdot d. 3 pdotmdot

An iron atom has a dipole moment of 9xx10^(24)Am^2 . Density of iron is 8g//cm^3 and molecular mass is 55g mole^-1 . If domain size of iron is a cube of side 10^-6m find (i) number of atoms in the domain (ii) maximum dipole moment (iii) intensity of magnetisation.

Class 10 Science (Hindi) | Chapter 2 | अम्ल, क्षार तथा लवण | Important Questions | Quick Revision

Below there is a conversation between a teacher and student of class 3rd on the topic Air Teacher:What will happen if there is unclean or polluted air in the whole world Student I:Ma'am will not get proper oxygen to breathe in StudentII:There will be no animals ,insectes etc Teacher:So what we will do? Student III:Ma'am for fresh air we have to plant more or more trees and stop using personal vehicle for traveling this interaction shows that students are good in

The table given below shows the temperatures recorded on a day at different times. Observe the table and answer the following questions. (a) What is the temperature at 8 am? (b) At what time is the temperature 3^(@)C? (c) During which hour did the temperature fall? (d) What is the change in temperature between 7 am and 10 am? (e) During which hour was there a constant temperature?

In a given statement followed by three assumptions numbered I, II and III. An assumption is something supposed or taken for granted. You have to consider the statement and the following assumptions and decide which of the assumptions is implicit in the statement. Then decide which of the answers (1), (2), (3),(4) and (s) is the correct answer. Statement : "If you did not have a mobile connection of MTNL you will feel a jolt when you come to know about a unique, free incoming facility from 10 PM to 8 AM, without any condition, for any network." - X tells Y Assumptions : I. X know about the facilities provided by other mobile services. II. X wants Y to be a subscriber of MTNL mobile services. III. People like free incoming facilities without any condition. 1) Only I 2) Only I and II 3) Only II and III 4) Only I and III 5) None of these