Which one of the following chemicals is responsible for the production of HCl in the stomach leading to irritation and pain?

Match List - I with List - II. List I (Salt) List II (Flame colour wavelength) (a) LiCl (i) 455.5 nm (b) NaCl (ii) 670.8 nm (c) RbCl (iii) 780.0 nm (d) CsCl (iv) 589.2 nm Choose the correct answer from the options given below :

Given below are two statements : Statement I : Both CaCl2 . 6H2O and MgCl2 . 8H2O undergo dehydration on heating. Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic. In the light of the above statements, choose the correct answer from the options given below :

The correct order of conductivity of ions in water is :

The set of elements that differ in mutual relationship from those of the other sets is :

One of the by-products formed during the recovery of NH3 from Solvay process is :

Match List - I with List - II List - I List - II (a) $$Ca(OCl{)}_2$$ (i) Antacid (b) CaS{O_4}.{1 \over 2}{H_2}O (ii) Cement (c) $$CaO$$ (iii) Bleach (d) $$CaC{O}_3$$ (iv) Plaster of paris Choose the most appropriate answer from the options given below :

Match List - I with List - II : List - I List - II (a) Be (i) treatment of cancer (b) Mg (ii) extraction of metals (c) Ca (iii) incendiary bombs and signals (d) Ra (iv) windows of X-ray tubes (v) bearings for motor engines Choose the most appropriate answer from the option given below :

The set in which compounds have different nature is :

A s-block element (M) reacts with oxygen to form an oxide of the formula MO2. The oxide is pale yellow in colour and paramagnetic. The element (M) is :

Match List-I with List-II List-I (Elements) List-II (Properties) (a) Ba (i) Organic solvent soluble compounds (b) Ca (ii) Outer electronic configuration $$6s^2$$ (c) Li (iii) Oxalate insoluble in water (d) Na (iv) Formation of very strong monoacidic base Choose the correct answer from the options given below :

Given below are two statements : Statement I : None of the alkaline earth metal hydroxides dissolve in alkali. Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group. In the light of the above statements, choose the most appropriate answer from the options given below :

Match List I with List II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List-I Elements List-II Properties (a) Li (i) Poor water solubility of $$I^{-}$$ salt (b) Na (ii) Most abundant element in cell fluid (c) K (iii) Bicarbonate salt used in fire extinguisher (d) Cs (iv) Carbonate salt decomposes easily on heating Choose the correct answer from the options given below :

Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R. Assertion A : Lithium halides are some what covalent in nature. Reason R : Lithium posses high polarisation capability. In the light of the above statements, choose the most appropriate answer from the options given below :

Match List - I with List - II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List - I List - II (a) Li (i) photoelectric cell (b) Na (ii) absorbent of $$C{O}_2$$ (c) K (iii) coolant in fast breeder nuclear reactor (d) Cs (iv) treatment of cancer (v) bearings for motor engines Choose the correct answer from the options given below :

What are the products formed in sequence when excess of CO2 is passed in slaked lime?

The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are :

Choose the correct statement from the following :

The major component/ingredient of Portland Cement is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Lithium salts are hydrated. Reason (R) : Lithium has higher polarising power than other alkali metal group members. In the light of the above statements, choose the most appropriate answer from the options given below :