Vitreous Humour

Q.

Compare and contrast the arrangement of elements in Mendeleev’s Periodic Table and the Modern Periodic Table.

Q. The shear stress in a fluid may be expressed as: $\tau \alpha {\left(\frac{dv}{dy}\right)}^2$
where $\frac{dv}{dy}$ is the velocity gradient and $n$ is constant. The $n$ value for Newtonian and non- Newtonian fluids will be respectively

1. $n=1$ and $n>1$
2. $n<1$ and $n>1$
3. $n=1$ and $n<1$
4. $n=1$ and $n\ne 1$

Q.

A man eats glucose and then he makes a block move, which then comes to rest after sliding on a rough floor. The correct order of energy changes can be:

1. Chemical - Heat - Kinetic

2. Chemical - Kinetic - Heat

3. Heat - Kinetic - Chemical

4. Kinetic - Chemical- Heat

Q.

There are ……………… elements in the periodic table

Q. Statement 1: Mendeleev's periodic law states that the properties of elements are the periodic function of their atomic mass.

Statement 2: The modern periodic law states that the properties of elements are the periodic function of their atomic number.

1. Statement 1 is true but statement 2 is false.
2. Both statement 1 and statement 2 are true.
3. Both statement 1 and statement 2 are false.
4. Statement 1 is false and statement 2 is true.

Q.

The physical and chemical properties of elements are the periodic function of their atomic masses are known as_____________.

Q.

(a)Who prepared the modern periodic table?

(b) Define-

• Modern periodic law
• Modern periodic table

Q.

Define modern periodic law.