19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is present as impurity in crude sodium chloride?
Crude…A… Generally obtained by crystallization of brine solution. Here, A refers to
Sea water contain…by mass of the salt (NaCl)
Above 373K, the monohydrate sodium hydrogen carbonate becomes completely anhydrous and called as
Which of the following exist as decahydrate?
Which of the following is known molecular formula of washing soda?
Potassium is not prepared by Solvay process because …X… is too soluble to be precipitated by addition of ammonium hydrogen carbonate. Here, X refer to
What will be the product when ammonium chloride is treated with calcium hydroxide?
Correct order of stability of group IIA metal carbonates is (OJEE 2009)
Solvay process is used in the preparation of
Lithium being very small in size, which …A… a large CO ion leading to the formation of more stable …B.. and …C.. Here A, B and C refer to
The carbonates and hydrogen carbonates of alkali metals are highly stable, their stability
Which of the following is correct regarding salt of oxo- acids of alkali metals?
Which of the following will give H2 gas with dilute HNO3? (CPMT 2009)
Low solubility of CsI is due to
Which physical property in the alkali metal group increases with atomic number? (AMU 2009)
Among the following, the least thermally stable is (J & K CET 2009)
Choose the incorrect statement among the following.
Which of the following order is correct regarding electropositive character of alkaline earth metals?
Assertion (A): Ba, Ca and Sr produces individual characteristic colour to flame test. Reason (R): this is due to excitation of loosely held electrons from outermost orbit to excited state of orbital.
Property of the alkaline earth metals that increases with their atomic number
A chemical (A) is used for the preparation of washing soda to recover ammonia. When CO2 is bubbled through an aqueous solution of A, the solution turns milky. It is used white washing due to disinfectant nature. What …
Chemical clinker can be obtained by the reaction of
‘A’ is an important constituent of cement which is responsible for setting of cement. What is the number of water of crystallization present in ‘A’?
In the case of alkali metals, the covalent character decreases in the order, (CBSE AIPMT 2009)