19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
An aqueous solution of ammonia consists of
In which on of the following arrangements the given sequence is not strictly according to the properties Indicated against it? (NEET 2021)
Urea reacts with water to form A which will decomposes to form B. B when passed through Cu2+ (aq), deep blue color solution C is formed. What is the formula of C from the following. (NEET 2020)
In which of the following, oxidation state of phosphorus is +3? (JIPMER 2019)
Which of the following oxoacids of phosphorus has strongest reducing property? (NEET (Odisha)2019)
A compound ‘X’ upon reaction with H2O produced a colourless gas ‘Y’ with rotten fish smell. Gas ‘Y’ is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. Predict the compound ‘X’ (NEET (Odisha)2019)
Identify the incorrect statement related to PCl5 from the following: (NEET 2019)
Which of the following rare gas is the abundant in air? (JIPMER 2019)
Yellow colour of chlorine water fades because of (AIIMS 2019)
Correct order of bond dissociation energy is (AIIMS 2019)
Which of the following statement is correct for oleum? (AIIMS 2019)
Which is the correct order of thermal stability for H2E (E = O, S, Se, Te and Po)? (NEET 2019) (a) H O H S H Se H Te H Po (b) H Po H Te H Se H S H O (c) H Se H Te H Po H O H S (d) H S H O H Se H Te H Po
Among the following, the correct formula of Marshall’s acid is (JIPMER 2018)
Conversion of oxygen into ozone is non-spontaneous at (AIIPMT 2018)
Which of the following pair behaves as strong and weak base hydride respectively? (JIPMER 2018)
Which of the following chemicals are used to manufacture methyl isocyanate that caused “Bhopal Gas Tragedy” ? (JIPMER 2018) (i) Methylamine (ii) Phosgene (iii) Phosphine (iv) Dimethylamine
The correct order of N-compounds in its decreasing order of oxidation states is (NEET 2018)
Which of the following oxyacid does not contain P–O– P bond? (AIIMS 2018)
In pyrophosphoric acid the number of hydroxyl groups are (UP CMT 2013)
The mixture of concentrated HCl and HNO3 made in 3 : 1 ratio contains (AIIMS 2013)
Which of the following is not a peroxyl acid? (Manipal 2012)
When a colorless gas is passed through bromine water, only decolourisation takes places. The gas is (AFMC 2012)
When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from (CBSE AIPMT 2012) (a)zero to +1 and zero to –5
Which one of the following statements is not valid for oxoacids of phosphorous? (Manipal 2012)
When conc. H2SO4 is heated with P2O5 the acid is converted to (UP CPMT 2012)