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'Cardboard’ in the poem refers to the photograph. This word has been used because photograph is now just a piece of paper with the memory as the poet's mother is dead now. It shows that human life is transitory and the cardboard which remains is memorable piece of paper.
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(2) Statistics helps in the proper and efficient planning of a statistical inquiry in any field of study.
(3) Statistics helps in collecting appropriate quantitative data.
Posted by Sakshi Singh 6 years, 5 months ago
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have large charge/radius ratio;
are hard and have high densities;
have high melting and boiling points;
form compounds which are often paramagnetic;
show variable oxidation states;
form coloured ions and compounds;
form compounds with profound catalytic activity;
Sia ? 6 years, 5 months ago
Elements in which the last electron enters the d-orbitals, are called d-block elements. These elements have general outer electronic configuration (n-1)d1-10 ns0-2. Zn, Cd and Hg which have general electronic configuration, (n-1) d10ns2 do not show most of the properties of transition elements. d-orbitals in these elements are completely filled in the ground state as well as in their common oxidation states. Thus, on the basis of properties, all transition elements are d-block elements but on the basis of electronic configuration, all d- block elements are not transition elements.
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Due to greater electronegativity of O than S, H2O undergoes extensive intermolecular H-bonding. As a result, H2O is a liquid at room temperature. In contrast, H2S does not undergo H-bonding. It exists as discrete molecules which are held together by weak Van der Waals forces of attraction. To break these forces of attraction, only a small amount of energy is required. Therefore, H2S is a gas at room temperature.
Posted by Vasu Jain 6 years, 5 months ago
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The value of fixed assets reduce after years because of usage and passage of time. It is well known that fixed assets are used for earning revenue. Therefore, decrease in their value is considered as an expense or loss incurred in earning revenue and like other expenses or losses, is charged to the Profit & Loss Account. Otherwise, profit will be overstated.
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Statistical data should be collected in a systematic and orderly manner because no conclusions can be drawn from statistics collected in a haphazard manner and data collected in such a manner will not be reliable. For accuracy and reliability of data, the figures should be collected in a systematic manner.
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If you choose downward direction to be positive and upward to be negative (generally used convention) then, g will be positive if the object is stationary or moving downwards. g will be negative if the object is moving upwards.
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