The formula of Urea is
A) NH4CNO
B) CO(NH2)2
C) CH3CONH2
D) C3H7NH2
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Define dimensions and dimensional formula of physical quantities. Give few examples of dimensional formula.
1. Dimensions: The dimensions of a physical quantity are the powers to which the fundamental units must be raised in order to obtain the unit of a given physical quantity. 2. Dimensional...
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The formula with subject C is `C=(5F-160)/(9)`. Then what is the formula with subject F?
Correct Answer - `F=(9)/(5)C+32`
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From the formula from the following table. Make a the subject of the formula. `{:(a,25^(@),34^(@),75^(@),4^(@),89^(@),85^(@)),(b,65^(@),56^(@),15^(@),
Correct Answer - `a=80^(@)-b`
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Frame the formula from the following table. Make Z the subject of the formula. `{:(X,1,2,1,2,3),(Y,1,2,2,1,4),(Z,2sqrt(2),sqrt(2),sqrt(5),sqrt(5),5):}
Correct Answer - `Z=sqrt(X^(2)+Y^(2))`
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Calculate the number of moles and molecules of urea present in 5.6 g of urea.
Given : Mass of urea = 5.6 g To find : The number of moles and molecules of urea Formulae : i. Number of moles = \(\frac{Mass\,of\,a\,substance}{Molar\,mass\,of\,a\,substance}\) ii. Number of molecules = Number of moles × Avogadro’s constant Mass...
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The molecular mass of an organic compound is 78 g mol^(-1). Its empirical formula is CH. The molecular formula is ………….
Option : (C) C6H6
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Urea has how much percentage of nitrogen ? A) 36 % B) 46 % C) 56 % D) 44 %
Correct option is B) 46 %
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The acidic urine becomes alkaline on standing due to the decomposition of urea to ……..
The acidic urine becomes alkaline on standing due to the decomposition of urea to Ammonia
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X = A + ∑fidi/∑fi is the formula to find mean for an ungrouped data. In this formula letter A represents for
Correct option is (A) Assumed mean In formula \(\overline X = A + \frac{\sum f_i d_i}{\sum f_i} ,\) letter A represents for assumed mean.
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