MereTeacher

JEE • NEET • FOUNDATION

JEE Previous Year Question

$Volume of 3 MNaOH (formula weight 40 g mol^{- 1}) which can be prepared from 84 g of NaOH is_______\times 10^{- 1} dm^{3} .$

Topic: JEE PYQ

Answer: 7. Full step-by-step solution below.

Correct answer: 7

Solution

(7) M = \frac{n _{NaOH}}{V _{sol} ( in L )} \Rightarrow 3 = \frac{( 84/40 )}{V} \Rightarrow V = 0.7 L = 7 \times 10^{- 1} L

More Some Basic Concepts of Chemistry PYQs

$In basic medium CrO_{4}^{2 -} oxidizes S_{2} O_{3}^{2 -} to form SO_{4}^{- 2} and itself changes in\dots$
$How many moles of magnesium phosphate, M g_{3} (P O_{4})_{2} will contain 0.25 mole of oxygen atoms?$
$An element, X has the following isotopic composition: 200 X : 90% 199 X : 8.0% 202 X : 2.0% The weighted average atomic\dots$
$Which of the following is the most accurate measurement?$
$The masses of carbondioxide and water (ing) respectively formed during complete combustion of 10 g of glucose at STP are$