Chemistry, 11.10.2021 20:10 mustafakhalil02
Following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Assertion : Phenolphthalein is an acid-base indicator.
Reason: Phenolphthalein gives different colours in acidic and basic medium.
Answers: 3
Chemistry, 22.06.2019 02:40, hardwick744
Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.
Answers: 2
Chemistry, 22.06.2019 05:00, hjamya17
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
Chemistry, 23.06.2019 09:30, Adolfosbaby
If the solubility of a gas in water is 1.22g/2.75 atm, what is it’s solubility (in g/l) at 1.0 atm
Answers: 1
Following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions...
Mathematics, 12.08.2020 05:01
Computers and Technology, 12.08.2020 05:01
Mathematics, 12.08.2020 05:01
Mathematics, 12.08.2020 05:01