Halides, sulphates and nitrates

27 questions on Halides, sulphates and nitrates from the s-Block Elements chapter: 5 NEET level, 11 JEE Main, 11 JEE Advanced. Each one opens with its answer and solution.

• The chemical formula of gypsum is NEET level
• Potassium nitrate on heating gives NEET level
• Which of the following sulphates has the lowest solubility in water? NEET level
• Epsom salt is NEET level
• Barium salts impart which colour to a Bunsen flame? NEET level
• When gypsum is heated at 393 K it forms plaster of Paris, (CaSO4)2.H2O. The number of moles of water lost per mole of gypsum is JEE Main level
• The solubility of group 2 sulphates decreases down the group mainly because JEE Main level
• Assertion (A): Anhydrous MgCl2 cannot be obtained by simply heating MgCl2.6H2O in air. Reason (R): On heating, the hydrate undergoes hydrolysis and gives Mg(OH)... JEE Main level
• Match the substance in Column I with its use in Column II. Column I: (P) BaSO4; (Q) (CaSO4)2.H2O; (R) MgSO4.7H2O; (S) CaCl2 (anhydrous). Column II: (1) setting ... JEE Main level
• Which of the following gases cannot be dried over anhydrous calcium chloride? JEE Main level
• Which of the following sulphates does not form an alum of the type M2SO4.Al2(SO4)3.24H2O? JEE Main level
• Take ionic radii Cs+ = 167 pm and Cl- = 181 pm. Using the radius ratio ranges 0.225-0.414 (tetrahedral), 0.414-0.732 (octahedral) and 0.732-1.000 (cubic), the c... JEE Main level
• The mass percentage of water in Glauber's salt, Na2SO4.10H2O (Na 23, S 32, O 16, H 1), is closest to JEE Main level
• A white powder dissolves completely in dilute HCl with effervescence when it is BaCO3 but remains undissolved when it is BaSO4. The reason is JEE Main level
• Select the correct statements. JEE Main level
• Anhydrous calcium nitrate decomposes on strong heating as 2Ca(NO3)2 -> 2CaO + 4NO2 + O2. Taking Ca 40, N 14, O 16, find the mass of gaseous products formed from... JEE Main level
• Solubility of the alkali metal fluorides in water increases from LiF to CsF. The best explanation is that JEE Advanced level
• A white salt X gives an apple green flame. On strong heating it gives a brown gas and a gas that rekindles a glowing splint, leaving a white residue that dissol... JEE Advanced level
• Anhydrous sodium sulphate (14.2 g) is heated with excess carbon: Na2SO4 + 4C -> Na2S + 4CO. The carbon monoxide produced is then burnt completely in air to carb... JEE Advanced level
• A sample of 4.92 g of hydrated magnesium sulphate, MgSO4.xH2O, is dissolved in water and treated with excess barium chloride solution. The BaSO4 (M = 233 g/mol)... JEE Advanced level
• The thermal decomposition temperatures of the nitrates Mg(NO3)2, Ca(NO3)2, Sr(NO3)2 and Ba(NO3)2 and the reason for the trend are best described by JEE Advanced level
• Assertion (A): Beryllium sulphate is highly soluble in water. Reason (R): The Be2+ ion is so small that its hydration enthalpy is very low, which makes dissolut... JEE Advanced level
• Plaster of Paris, (CaSO4)2.H2O (Ca 40, S 32, O 16, H 1), sets to a hard mass of gypsum on mixing with water. The mass of water chemically taken up when 5.80 g o... JEE Advanced level
• Heating which of the following nitrates leaves the metal oxide as residue, with evolution of nitrogen dioxide and oxygen? JEE Advanced level
• Which statements about lithium sulphate and sodium sulphate are correct? JEE Advanced level
• Which of the following statements about gypsum and plaster of Paris are correct? JEE Advanced level
• Which of the following statements about halides of s-block elements are correct? JEE Advanced level