Pure Sciences Quiz

What is the correct formula for nitrogen dioxide?

• NO₂

• NO₃

• N₂O

• N₂

Which of the following can be explained using the particle model?

• A gold bar weighs more than an iron bar of the same volume

• Mercury has a lower melting point than aluminium

• When melted, iron can be poured to take the shape of a mould

• Copper is a conductor of electricity and sulfur is not

Which of the following has a fixed melting point and boiling point?

• Terylene

• Glucose

• Bronze

• Tap water

The proton number of arsenic, As, is 33. What is the most likely formula for the compound it forms with hydrogen?

• AsH

• AsH₂

• AsH₃

• AsH₅

If two moles of an alkali are neutralized by one mole of an acid in aqueous solution, which of the following can be alkali and the acid?

• Sodium hydroxide and nitric acid

• Barium hydroxide and sulfuric acid

• Calcium hydroxide and hydrochloric acid

• Lithium hydroxide and sulfuric acid

Bile helps in digestion of fats through

• Breaking fats into small pieces
• Emulsification
• Forming muscles
• None of these

Correct enzyme-substrate pair is

• Maltose - lactose
• Protein - amylase
• Carbohydrate - lipase
• Casein - rennin

If a patient is advised to take more meat, butter milk and eggs in his diet. The person is

• Suffering from rickets
• Cannot see in the dark
• Suffering from scurvy
• Suffering from Kwashiorkor disease

Why do we urinate more in wet and cold months?

• Kidney becomes more active
• Increase of ADH secretion
• Sweating is much reduced
• Impairment of water absorption in nephron

What value is missing at G?

• 20%

• 2%

• 15%

• 10%