Question 2 :
Approximate atomic weight of an element is 26.89 . If its equivalent weight is 8.9 , the exact atomic weight of element would be :- -
Question 3 : Stoichiometric ratio of sodium dihydrogen orthophosphate and sodium hydrogen orthophosphate required for synthesis of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7fed1a3d2442ab82937d8"> is
Question 4 : The number of mole present in 2 litre of 0.5 <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7fcdcfdd8313cc872674e"> NaOH is:
Question 5 :
Which one of the following set of units represents the smallest and largest amount of energy respectively?
Question 6 :
A 10% solution of $HNO_3$ would be produced by dissolving 63 g $HNO_3$ in how many mL water?<br>
Question 7 :
X gram of pure $As_2S_3$ is completely oxidised to respective highesst oxidation states by 50 ml of 0.1 M hot acidified $KMnO_4$ then X, mass of $As_2S$ taken is :(Molar mass of $As_2S=246$)
Question 8 :
What is the concentration in molarity of lithium hydroxide prepared by dissolving $48.0$ grams of solid in sufficient water of make $250\ mL$ of solution?
Question 9 :
$3.01\times 10^{23}$ molecules of elemental Sulphur will react with 0.5 mole of oxygen gas completely to produce<br>
Question 10 :
Calculate the molarity of a solution containing 20.7 g of potassium carbonate dissolved in 500 mL of solution (assume density of solution = 1 g mL$^{-1}$).
Question 11 :
To a 25 ml $ H_{2}O_{2}$ solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 ml of $ 0.3 N \ Na_{2}S_{2}O_{3}$ solution. The volume strength of $ H_{2}O_{2}$ solution is:
Question 12 :
What molar concentration of $NH_3$ provides a $[OH^-]$ of $1.5 \times 10^{-3}$ ?<br>$(K_b = 1.8 \times 10^{-5})$
Question 14 :
The molarity of a solution in which $5.3$g $Na_2CO_3$ is dissolved in $500$ mL will be:
Question 15 :
Potassium permanganate acts as an oxidising agent in acidic, alkaline as well as neutral media. Which among the following statements is incorrect?
