19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statements(s)is/are correct regarding sodium hydroxide? I. It is white and translucent. II. It melts at 591K. III. It is non-deliquescent IV. It is soluble in water and its aqueous solution is h…
Which of the following is used in the preparation of cakes or pastries?
Which of the following exist as decahydrate?
The formula of soda ash is
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
Which of the following is known molecular formula of washing soda?
Which of the following ion is most abundant within cell fluid?
Alkaline earth metals are …X… than that of alkali metals. Here, X refer to
Choose the correct statement/statement out of the following (a) f H always became less negative on moving top to bottom for alkali halides (b) f H always becomes less negative from fluoride to iodide for alkali metals
Which of the following is correct regarding salt of oxo- acids of alkali metals?
Which of the following statement (s) is/are correct regarding alkali metal halides? I. They possess high melting point and are crystalline in nature. II. They are prepared by reaction of appropriate oxides with aqueou…
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
Choose the incorrect statement out of the following
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
The alkali metal oxides dissolve in water to produce
Solvay process is used in the preparation of
Choose the correct statements (s) regarding lithium and alkali metals I. Lithium is much harder. Its m.p and b.p are higher than other alkali metals. II. Lithium is highly reactive and strongest reducing agent in comp…
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
Similarity between lithium and magnesium is particularly stricken and arises because of their
What will be the product when ammonium chloride is treated with calcium hydroxide?
Match the Column I and Column II according to element and their characteristics colours, appears in flame test and select the correct option from the codes given below. Column I Column II A. Ca 1. Apples green B. Sr 2…
Powder of beryllium burns in air frequently to produce
Magnesium burns in air to produce MgO and …X… with …Y… flame. Here, X and Y refer to
When sodium nitrate is heated above 800° C then (JCECE 2006)
Which of the following metal is used to form useful alloys?