The p-Block Elements questions
1863 published questions with worked solutions.
- Which of the following will react with fluorine?
- Which of the following is NOT the reason for non-reactivity of noble gases?
- Ammonia, on reaction with excess of chlorine, gives ________ [AFMC 2010]
- Phosphine is NOT obtained by the reaction _________ [MP PMT 1989, AMU (Engg.) 2010]
- In which oxyacid of phosphorus three-OH groups are present? [MH CET 2013]
- When heated NH_3 is passed over CuO, gas evolved is ________
- Which is most thermodynamically stable allotropic form of phosphorus?
- Phosphine is prepared in the laboratory by the reaction of ______ [CPMT 1983, MP PET/PMT 1989, BVP 2003, Orissa JEE 1988, Orissa...
- Which of the following contains P – O – P bond? [WB JEE 2010]
- The reaction, which forms nitric oxide, is __________ [Karnataka CET (Med.) 2001]
- What may be expected to happen when phosphine gas is mixed with chlorine gas? [AIEEE 2003]
- Which is TRUE with regard to the properties of PH_3 ? [BHU 2000]
- What is the basicity of orthophosphorus acid?
- The least stable hydride of 15th group elements is ________
- One mole of calcium phosphide on reaction with excess water gives ______ [IIT JEE 1999]
- How many bridging oxygen atoms are present in P_4O_ 10 ?
- Which oxide of nitrogen is obtained on heating ammonium nitrate at 250°C? [AIIMS 1999]
- The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorus acid is _________
- The triatomic species of elemental oxygen is known as __________
- Ozone is present as a chief constituent in which region of the atmosphere? [MH CET 2014]
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