Question

VIDYA DARSHAN ENGLISH VEDWIGH SCHOOL
542 EXAM
CLASS:-
SURSSENCE
MERS
Choose the correct answer 14:12
Proposed that electrons are embedded in a positive sphere
As Thompson
B] Rutherford
Bohr O Chandwick
2) Syminal of the element Helium is --------
he
olm
3) The Avogadrds constant is -------
16.022 / 10
8) 6.022% 1.000
16922710​

Answer 1

Explanation:

$\huge \red{Question: - }$

What are periodic changes? Are most of the changes that we see around in daily life periodic?

$\huge\red {Answer:-}$

1. Plant cells have different shapes. - $\red{\sf{False}}$

$\implies$ αmímαl cells have diffeeent shapes.

2. The cell membrane is freely permeable - $\red{\sf{False}}$

3. The longest coll is that of an ostrich egg- $\red{\sf{False}}$

4. The colours imparted by chromoplasts promote pollination - $\red{\sf{False}}$

5. Centrosomes help in cell division- $\red{\sf{False}}$

Answer 2

Answer:

Avagrado constant is 6.022•10^-6

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