Question

symbol for silicon is:
So
(b) Si
(d) Sn
ctron distribution in an sodium atom is:
a) 2, 8, 1
(b) 1,8,2
(C) 8, 2, 1
(d) 2, 1,8
3) 5 Kingdom classification has been given by
(a) Morgan
(b) R Whittaker
(c) Linnaeus
(d) Haeckel
4) Well defined nucleus is absent in
(a) Blue green algae
(b) Diatoms
(c) Algae
5) Rate of change of velocty is :
(a) Speed
(b) Acceleration
(C) Pressure
(d) Yeast
(d) Force
Fill in the blanks:
1) Transporting channels of the cell
2) Valences of chlorine will be
3) Power house of the cell
4) Acceleration is a
quantity.
5)
have guard cells.
Match the Pairs:
A
B
Electron
Canal rays
Atomic number
1) Moseley
2) Dalton
3) Chadwick
4) ).J. Thomson
5) E. Goldstein
Answer in one word/sentence:
Invisibility of atoms
Neutron
1. Write the formula of aluminum sulphate.
2. What is the rate of change of velocity called
3. In which animal the work division is found.
4. By what process is the distilled water obtained?
5. Write SI unit of displacement,​

Answer 1

Answer:

1) Si

2) 2,8,1

3)R. Whittaker

4) blue green algae

5) Acceleration

Fill ups:-

1) endoplasmic reticulum

2) 1

3) mitochondria

4) vector quantity

5) stomata

Answer in one word:-

Invisibility of atoms was proposed by democritus

1) Al3( So4)2

2) acceleration

3) hydra

4) distillation

5) metre