Quiz on Properties of Water

This quiz is designed to assess your basic knowledge in 'biochemistry'.  Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'.  Percentage scores will be displayed along with the right answers. 

1. The bond angle of water molecule is
105.4
104.5
105.8
100

2. In order for water to become a vapour, there must be efficient heat energy to
break its hydrogen bonds
break its its covalent bonds
lower its specific heat
raise its specific heat

3. Water has maximum density at ---degrees celcius.
4
-4
100
0

4. The elements of a water molecule are held together by which type of bond?
hydrogen bond
covalent bond
coordinate covalent bond
ionic bond

5.Which of the following is not one of water's special properties?
High viscosity
High Surface Tension
High Specific Heat Capcity
All of these

6. The amount of heat required to evaporate one gram of water at 50oC is:
100 calories
140 calories
340 calories
540 calories

7.Which of the following statements does not correctly describe water properties?
Viscosity increases with the addition of salt.
Cohesion is visible in the water's surface tension.
Increasing the temperature of water increases the surface tension.
Cohesion reflects the ability of hydrogen bonds to hold water molecules together.

8.A variety of water which contains soluble salts of Calcium and Magnesium is known as
soft water
Heavy water
Hard water
Saline water

9.The molarity of pure water at 277K is
1M
5M
55.5M
100M

10. An unusual property of water is that a large amount of heat energy is required to raise its temperture. The aount of heat energy is needed to raise one gram of a substance 1 degree is called
heat of vaporization
heat of melting
specific heat
specific temperature

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