UHS MDCAT 2019 PAPER

1. Modern periodic table is arranged in ascending order of ?

2. In the second period of elements, although oxygen lies next to nitrogen yet its ionization first energy is lower than that of nitrogen because?

3. Chlorofluorocarbons (CFCs) are important compounds which are used as refrigerants but these are also responsible for Ozone layer depletion. If a Chlorofluorocarbon CFCI3 is present in stratosphere, which of it’s reaction intermediates are actually responsible for the breakdown of Ozone molecule?

4. Solution contains 85.5 g of sucrose (C12 H22 O11) in 250 cm3. What is its molarity?

5. Which of the following is the electronic configuration of Cr?

6. All the collisions between the particles of gases are elastic In nature. What is meant by “Elastic Collisions”?

7. Aqueous solutions of Iodine and Sodium hydroxide were mixed in a round bottom flask at 70 C. Following chemical reaction was carried out. This reaction is termed as

8. Carboxylic acids can be reduced into corresponding alcohols. Which of the following reagent can be used for this purpose?

9. How many moles of calcium carbonate are present in 1.75 kg of calcium carbonate? (Ar 50 of Ca = 40, Ar of C = 12, Ar of O = 16)

10. Which of the following molecule shows cis- trans isomers