Question

2. What is the S.I. unit of temperature
(c)Celsius
(d) Calorie
(b) Kelvin
(a) Newton
3. Symbol of silver-
(c) Hg
(b) Mg
(d) Ag
(a) Au
4. Valence of oxygen -
(b) 2
(a) 4
(d) 5
(c)3
5. Physical state of Mercury-
(a) Liquid
(b) Vapour
(c) Solid
(d) Non of the
Q.2 Fill in the blanks -
1.
i ri i no
Power house of the cell is-------
Proton is discovered by-------.
Atomic No of hydrogen is.......
Atomic mass of carbon is------
The unit of energy is ---
Valence of Nitrogen is-----​

Answer 1

Explanation:

ᴛʜᴇ ᴋᴇʟᴠɪɴ (ᴋ) ɪꜱ ᴅᴇꜰɪɴᴇᴅ ʙʏ ᴛᴀᴋɪɴɢ ᴛʜᴇ ꜰɪxᴇᴅ ɴᴜᴍᴇʀɪᴄᴀʟ ᴠᴀʟᴜᴇ ᴏꜰ ᴛʜᴇ ʙᴏʟᴛᴢᴍᴀɴɴ ᴄᴏɴꜱᴛᴀɴᴛ ᴋ ᴛᴏ ʙᴇ 1.380 649 ×10−23 ᴡʜᴇɴ ᴇxᴘʀᴇꜱꜱᴇᴅ ɪɴ ᴛʜᴇ ᴜɴɪᴛ ᴊ ᴋ−1, ᴡʜɪᴄʜ ɪꜱ ᴇQᴜᴀʟ ᴛᴏ ᴋɢ ᴍ2 ꜱ−2 ᴋ−1, ᴡʜᴇʀᴇ ᴛʜᴇ ᴋɪʟᴏɢʀᴀᴍ, ᴍᴇᴛᴇʀ ᴀɴᴅ ꜱᴇᴄᴏɴᴅ ᴀʀᴇ ᴅᴇꜰɪɴᴇᴅ ɪɴ ᴛᴇʀᴍꜱ ᴏꜰ ʜ, ᴄ ᴀɴᴅ ∆νᴄꜱ.

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Answer 2

Answer:

2=kelvin

3=AU

4=2

5=liquid