19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The correct order of N-compounds in its decreasing order of oxidation states is (NEET 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
Which of the following pair behaves as strong and weak base hydride respectively? (JIPMER 2018)
Conversion of oxygen into ozone is non-spontaneous at (AIIPMT 2018)
Among the following, the correct formula of Marshall’s acid is (JIPMER 2018)
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
Which of the following statement is correct for oleum? (AIIMS 2019)
Correct order of bond dissociation energy is (AIIMS 2019)
Yellow colour of chlorine water fades because of (AIIMS 2019)
What is X and Y in the above reaction? (AIIMS 2019) (Excess) (Excess) 8NH 3Cl X NH 3Cl Y → →
A green yellow gas reacts with an alkali metal hydroxide to form a halite which can be used in fireworks and safety matches. The gas and halite are, respectively (AIIMS 2019)
Which of the following inert gas participate in chemicals reaction? (AIIMS 2019)
In how many of the following number of lone at central atom is zero XeO₃, XeO₂F₂, XeO₄, XeO₃F₂, XeO₃F₆ ? (AIIMS₂₀₁₉)
Identify the incorrect statement related to PCl₅ from the following: (NEET 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)
Which of the following oxoacids of phosphorus has strongest reducing property? (NEET (Odisha)₂₀₁₉)
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 on of the following arrangements the given sequence is not strictly according to the properties Indicated against it? (NEET 2021)
Among the following, the element that does not show allotropy is
Which of the following halides of nitrogen is stable?
The tendency of nitrogen halides to act as Lewis bases decreases in the order
Which statement is wrong for NO ?
FeSO₄ is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is
Which of the following complexes is responsible for the brown colour of the ring formed in the ring test for the nitrates? (a)[Fe(CN)₅NO]3+ (b)[Fe(H₂O)₄NO]2+NO⁺
Which of the following oxides of nitrogen is a mixed anhydride of two acids?