What is Downward Displacement of Water?
- 11 Answers
- 45237 Views
- BARC, RyanAir, I also Faced
- E-Mail Answers
Answer Posted / devesh asrani
Downward displacement of water is a laboratory method of
preparation of hydrogen which is present dissolved in water.
Zinc granules are placed in a flask with two holes at the
top. Thistle funnel is passed through one hole and a
delivery tube through another. The delivery tube is attached
to a bee hive shelf in a shelf under water.Dilute
hydrochloric acid is added through the thistle funnel. small
bubbles are seen. This is how hydrogen gas is collected
Zn+HCl......ZnCl2+H2
| Is This Answer Correct ? | 27 Yes | 38 No |
Post New Answer View All Answers
what kind of question can be asked in interview for polarimeter related ?
How to accelerate electron capture decay?
4 Identify the substance oxidized, reduced, oxidizing agent and reducing agent for the following reactions
In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??
During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.
WHAT IS THE SYLLABUS OO GROUP -I?
Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?
why athanol-water mixtuere have maximum viscocity in wt% 40?
Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?
What is the brigg's raucher reaction?
What is the requirement to give RFlow when using RID detector?
what kind of question can be asked in interview for UV- VISIBLE & give me answer ?
The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)
what does 50 denote in dowex 50 ????
. Given that 2Hg2+ (aq) + 2 e- Hg22+(aq) E0 =0.92V Hg22+ (aq) + 2 e- 2Hg(l) E0 =0.85V Calculate standard free energy change and K for the following process at 25oC Hg22+(aq) Hg2+ (aq) + Hg(l)
