JEE Main202324 Jan 2023Morning ShiftChemistrys Block ElementsActual
Match Column I with Column II Column I Column II A Soda ash I CaSO 4 B Chlorophyll II Ca OH 2 C Used in Whitewashing III Na 2 CO 3 D Dentistry, ornamental work IV Mg 2 + ions
Options
- AA – III, B – IV, C – I, D – II
- BA – II, B – I, C – III, D – IV
- CA – III, B – I, C – II, D – IV
- DA – II, B – III, C – IV, D – I
Correct answer
A. A – III, B – IV, C – I, D – II
Step-by-step solution
Sodium carbonate Na 2 CO 3 also known as washing soda, soda ash and soda crystals. In chlorophyll the central ion is magnesium, and the large organic molecule is a porphyrin. Whitewash, lime paint is a type of paint made from slaked lime (calcium hydroxide,   Ca ( OH ) 2 ) or chalk calcium carbonate, ( CaCO 3 ). CaSO 4 is used in dentistry and ornamental work.