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 known molecular formula of washing soda?
Which of the following is used in the preparation of cakes or pastries?
What will be the product when ammonium chloride is treated with calcium hydroxide?
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
The formula of soda ash is
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…
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…
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
The alkali metal oxides dissolve in water to produce
Which of the following is correct regarding salt of oxo- acids of alkali metals?
Similarity between lithium and magnesium is particularly stricken and arises because of their
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
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
Match the Column I and Column II and choose the correct option from the codes give below. Column I Column II A. Potassium 1. Soft soap B. Potassium chloride 2. Fertilizer C. Potassium hydroxide 3. Photoelectric cells …
Anomalous behavior of lithium is due to I. exceptionally small size of its atom II. High polarizing power. III. High Charge Radius ratio. Choose the correct option
…A… is used in devising photoelectric cells. Here, A refer to
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
Solvay process is used in the preparation of
Powder of beryllium burns in air frequently to produce
HCl was passed through a solution of CaCl₂, MgCl₂ and NaCl. Which of the following compound(s) crystallise(s)? (NEET 2020)
The correct trend of melting point and boiling point of alkali metal halides
Low solubility of LiF in water is due to …A… Here, A refer to