Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".

The red and (the white rose) looks beautiful.

(1) white rose

(2) a white rose

(3) an white rose

(4) No Improvement

Option 1: 1

Option 2: 2

Option 3: 3

Option 4: 4

Question : In 1957, who redefined a model that predicted the shape of individual molecules based on the extent of electron-pair electrostatic repulsion?

Option 1: Nyholm and Gillespie

Option 2: Heitler and London

Option 3: Staudinger and Perry

Option 4: Marcet and Pauling

Question : In 1898, whose theory propounded that the ions/groups bonded to the metal by secondary bonding have spatial arrangements corresponding to different characteristic coordination numbers?

Option 1: Henry Taube

Option 2: Alfred Werner

Option 3: Erich Huckel

Option 4: Emil Fischer

Question : The poison of honey bee is:

Option 1: acidic

Option 2: alkaline

Option 3: saltish

Option 4: protein

Question : Whose invention led to the development of the polio vaccine?

Option 1: Ernst Haeckel

Option 2: Jonas Salk

Option 3: Linus Pauling

Option 4: Robert Wellberg