Related Questions

100 kg of solution A is mixed with 60 kg of solution B . If solution A has tin and copper in the ratio 1: 4 and solution B has lead and tin in the ratio 3 :2 then what is the amount of tin in the new solution?
A 70 kg
B 36 kg
C 44 kg
D 56 kg
The metal used to recover copper from a solution of copper sulphate is
A Na
B Ag
C Hg
D Fe
Which of the following metals can displace copper from copper sulphate solution ?
A Platinum
B Mercury
C Iron
D Gold
তড়িৎদ্বার দুটির বিজারণ বিভব যথাক্রমে -0.76 V এবং +0.80 V । এই তড়িৎদ্বার দুটি দ্বারা তৈরি কোষের মোট বিভব কত? (The reduction potentials of two electrodes same are -0.76 V and +0.80 V, respectively. what is the EMF of a cell constructed using these two electrodes?)
A -0.04 V
B +0.04 V
C -1.56 V
D +1.56 V
Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?
A 6.09%
B 10%
C 10.75%
D 21.5%
Solution X is 10% percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?
A 600
B 800
C 300
D 250
E None of these
0.98 g H2SO4 ব্যবহার করে 1.0 L জলীয় দ্রবণ তৈরি করা হোল। দ্রবণটির ঘনমাত্রা কত? (1.0 L aqueous solution is prepared using 0.98 g of H2SO4 What is the concentration of the solution?)
A 0.1 M
B 0.01 M
0.98 g H2SO4 ব্যবহার করে 1.0 L জলীয় দ্রবণ তৈরি করা হল। দ্রবণটির ঘনমাত্রা কত? (1.0 L aqueous solution is prepared using 0.98 g of H2SO4,. What is the concentration of the solution?
A 0.1 M
B 0.01 M
Give an example of a salt which gives an aqueous solution of pH less than 7.
A Ammonium chloride
B Sodium carbonate
C Sodium bicarbonate
D Sodium chloride
কোন যৌগটি পানিতে সহজে দ্রবীভূত হয়ে গাঢ় সালফিউরিক এসিডের সাথে বাষ্পযুক্ত সাদা ধোঁয়া তৈরি করে এবং জলীয় সিলভার নাইট্রেট দ্রবণে সাদা অধঃক্ষেপ দেয়? (Which compound dissolves easily in water, form steamy white fumes with concentrated sulfuric acid and gives white precipitate with aqueous silver nitrate solution?)
A AgCl
B NaBr
C NaCl
D PbBr2

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