19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
N2 is commercially prepared by
Which of the following forms strong p - p bonding
Which of the following gases is the least reactive?
An aqueous solution of ammonia consists of
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)
Which of the following oxides is the most acidic?
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which of the following is the increasing order of enthalpy of vaporization?
Which one of the following compounds is most explosive?
The tendency of nitrogen halides to act as Lewis bases decreases in the order
Which of the following halides of nitrogen is stable?
Among the following, the element that does not show allotropy is
The element which forms oxides in all oxidation states +I to + V is :
The most stable oxidation states of nitrogen are
Which of the following statements is not true for halogens? (NEET 2019)
Correct order of bond dissociation energy is (AIIMS 2019)
Yellow colour of chlorine water fades because of (AIIMS 2019)
Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy? (AIIMS 2019)
What is X and Y in the above reaction? (AIIMS 2019) (Excess) (Excess) 8NH 3Cl X NH 3Cl Y -> ->
In which of the following, oxidation state of phosphorus is +3? (JIPMER 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)
Which of the following inert gas participate in chemicals reaction? (AIIMS 2019)
In which on of the following arrangements the given sequence is not strictly according to the properties Indicated against it? (NEET 2021)
Which of the following rare gas is the abundant in air? (JIPMER 2019)