Forum

Deepak Rock
@deepak-rock
Forum Home   |   Recent Posts
Illustrious Member
Joined: Aug 6, 2021
Last seen: Sep 10, 2021
Profile Activity
Topics: 1742 / Replies: 303
AllTopicsReplies
Topic
Two vessels containing gases A and B are interconnected as shown in the figure. The stopper is opened, the gases are allowed to mix homogeneously.
3 years ago
Forum
States of Matter
Replies: 0
Views: 321
Topic
A bubble of the gas released at the bottom of a lake increases to eight times the original volume when it reaches the surface.
3 years ago
Forum
States of Matter
Replies: 0
Views: 265
Topic
A manifestation of surface tension is (a) rise of liquid in a capillary tube (b) spherical shape of liquid drops
3 years ago
Forum
States of Matter
Replies: 0
Views: 253
Topic
The value of van der waals constant ‘a’ for gases O2, N2, NH3 and CH4 are 1.360, 1.390, 4.170 and 2.253 litre 2 atm mol-2 respectively. The gas which can most easily be liquefied is :
3 years ago
Forum
States of Matter
Replies: 0
Views: 159
Topic
For 1 mol of an ideal gas at a constant temperature T, the plot of log P against log V is a (P : Pressure, V : Volume) (a) Straight line parallel to x-axis. (b) Straight line with a negative slope.
3 years ago
Forum
States of Matter
Replies: 0
Views: 281
Topic
Sulphur dioxide and oxygen were allowed to diffuse through a porous partition. 20 dm^3 of SO2 diffuses through the porous partition in 60 seconds.
3 years ago
Forum
States of Matter
Replies: 0
Views: 282
Topic
A He atom at 300 K is released from the surface of the earth to travel upwards. Assuming that it undergoes no collision with other molecules, how high will it be before coming to the rest?
3 years ago
Forum
States of Matter
Replies: 0
Views: 417
Topic
Equal masses of methane and oxygen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is
3 years ago
Forum
States of Matter
Replies: 0
Views: 312
Topic
How many molecules of water of crystallisation (per formula unit) are present in: (a) copper sulphate crystals? (b) washing soda? (c) gypsum?
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 201
Topic
Write the name and formula of one salt each which contains : (a) two molecules of water of crystallisation (b) five molecules of water of crystallisation
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 375
Topic
When chlorine and sodium hydroxide being produced during the electrolysis of brine are allowed to mix, a new chemical is formed. Name this chemical and write its uses.
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 335
Topic
A white chemical compound becomes hard on mixing with proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemical compound.
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 374
Topic
A person found that the cake prepared by him is hard and small in size. Which ingredient has he forgotten to add that would have caused the cake to rise and become light? Explain your answer.
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 181
Topic
A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. Explain the phenomenon.
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 324
Topic
A white powdery substance having strong smell of chlorine is used for disinfecting drinking water supply at waterworks. Identify the substance. Give its chemical name and write the chemical reaction for its preparation.
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 142
Topic
Consider the following salts : Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH4)2SO4 Which of these salts will give : (a) acidic solutions?
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 301
Topic
A compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. (a) Identify the compound X (b) Write the chemical equation for its preparation.
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 299
Topic
Give one example each of a salt which gives an aqueous solution having: (a) pH less than 7 (b) pH equal to 7 (c) pH more than 7
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 147
Topic
Consider the following substances : NaCl, Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2 (a) Which two substances combine to form bleaching powder?
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 197
Topic
When the concentrated aqueous solution of substance X is electrolysed, then NaOH, Cl2 and H2 are produced. Name the substance X. What is the special name of this process?
3 years ago
Forum
Acids, bases and salt
Replies: 0
Views: 211
Page 5 / 103

How Can We Help?

    Home

    About Us

    Contact Us

    Privacy Policy

    Term of Use

    Copyright © 2020 Eanshub

    All Rights Reserved