Which of the following molecule is polar__________________?
Which of the following molecule is polar__________________? A. CCI4 B. CO2 C. BF3D. none of the above
Which of the following molecule is polar__________________? A. CCI4 B. CO2 C. BF3D. none of the above
Which of the following elements has greater 1st ionization energy__________________? A. B B. CC. N D. O
Which catalyst is used in contact process ? A. Fe2O3B. V2O5 C. SO3 D. Ag2O
What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ? A. 6 B. 4 C. 3D. 2
On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________? A. k B. black C. yellowD. brick red
Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ? A. aluminium can be recycled B. aluminium has very low density C. aluminium is…
In solids the temperature is the measure of__________________? A. Average kinetic energy of moleculesB. Vibrational kinetic energy C. Translational kinetic energy D. None of the above
All the transition elements show_________________? A. Similar physical properties B. Similar chemical properties C. Both A and bD. None
Purines and pyrimidines are_________________? A. EnzymesB. Nitrogenous bases C. Carbohydrates D. Lipids
Which of the following element doesnot show allotropy_________________? A. Carbon B. ArsenicC. Nitrogen D. Sulphur