Please wait...

CDS - Inorganic Chemistry Test 1340
Result
CDS - Inorganic Chemistry Test 1340

  • /

    Score

  • -

    Rank
Time Taken: -
  • Question 1/5
    1 / -0.33
    Which one of the following metals has malleability properties?
    Solutions
    Malleability is a property of a material by which it can be beaten to form thin sheets. Most metals are malleable. Examples of malleable metals are zinc, iron, aluminum, copper, gold, and silver. Hence, the correct option is D.

  • Question 2/5
    1 / -0.33
    Which one of the followings naturally occurring acids is found in abundance in tomatoes?
    Solutions

    Oxalic acid naturally occurring acids is found in abundance in tomato.

    * The main acid found in tomatoes is oxalic acid.

    * Tomatoes contain over ten different types of acids, including citric acid, malic acid, ascorbic acid, and oxalic acid.

    * Tomato contains a variety of acids, but two in particular account for a significant portion of the total: citric acid and malic acid.

    Hence, option C is correct.

  • Question 3/5
    1 / -0.33
    The principle of working of soda acid fire extinguisher is based on
    Solutions
    The principle of working of soda acid fire extinguisher is based on the following: cooling the combustible material below its ignition temperature.

    A soda acid fire extinguisher consists of concentrated sulphuric acid and baking soda( sodium bicarbonate) . On pressing the knob, the sulphuric acid reacts with the soda which forms sodium sulfate and water liberating CO2 . This helps in cutting off the oxygen supply and thus extinguishes the fire.

    In a soda acid fire extinguisher, when the knob is struck concentrated sulphuric acid present in the fire extinguisher comes in contact with sodium bicarbonate and produces carbon dioxide that puts out the fire. Hence, the correct option is A.

  • Question 4/5
    1 / -0.33
    Which one of the following compounds is removed for softening hard water?
    Solutions
    Hard water can be softened by washing soda or sodium carbonate. It removes the calcium ions in a precipitation reaction from the hard water. And then the hard water passed through an ion-exchange resin in a column. In the water, sodium ions replace the calcium ions when it passes through the column. Hence, the correct option is B.
  • Question 5/5
    1 / -0.33
    Which one of the following metals shows less property of malleability?
    Solutions
    Some metals can be beaten into thin sheets. This property is called malleability. Gold, silver, copper, and iron are examples of malleable metals. Hence option D is correct.

    ADDITIONAL INFORMATION: Zinc is neither ductile nor malleable at room temperature. However, at temperatures above 100oC, it becomes somewhat malleable.

User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
  • 3
  • 4
  • 5
Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Click on Allow to receive notifications
×
Open Now