A substance which increases the efficiency of a catalyst is known as promoter or activator.Hope it helps✌✌✌
ᴄᴀᴛᴀʟʏsᴛ: ᴀ ᴄᴀᴛᴀʟʏsᴛ ɪs ᴛʜᴀᴛ sᴜʙsᴛᴀɴᴄᴇ, ᴡʜɪᴄʜ ᴇɪᴛʜᴇʀ ɪɴɪᴛɪᴀᴛᴇs ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ᴏʀ ᴀᴄᴄᴇʟᴇʀᴀᴛᴇ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ ᴡɪᴛʜᴏᴜᴛ ᴜɴᴅᴇʀɢᴏɪɴɢ ᴀɴʏ ᴘᴇʀᴍᴀɴᴇɴᴛ ᴄʜᴀɴɢᴇ ɪɴ ɪᴛsᴇʟғ.
ʜᴏᴡᴇᴠᴇʀ, ᴛʜᴇʏ ᴀғғᴇᴄᴛ ᴛʜᴇ ʀᴀᴛᴇ ᴏғ ʀᴇᴀᴄᴛɪᴏɴ ʙʏ ɪɴᴄʀᴇᴀsɪɴɢ ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ʀᴇᴀᴄᴛɪᴏɴ.
ᴛʜᴇ ᴄᴀᴛᴀʟʏsᴛs ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴀs ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ᴀᴄᴛɪᴠᴀᴛᴏʀs ᴡʜɪᴄʜ ᴅᴏ ɴᴏᴛ ɢᴇᴛ ɪɴᴠᴏʟᴠᴇᴅ ɪɴ ᴛʜᴇ ᴘʀᴏᴅᴜᴄᴛ ғᴏʀᴍᴀᴛɪᴏɴ ,ʙᴜᴛ ᴛʜᴇɪʀ ᴘʀᴇsᴇɴᴄᴇ ᴄᴀᴜsᴇs ᴀ ʀᴇᴀᴄᴛɪᴏɴ ᴛᴏ ᴏᴄᴄᴜʀ ғᴀsᴛᴇʀ.
ᴇx: sᴏᴍᴇ ᴍᴇᴛᴀʟs ʟɪᴋᴇ; ɴɪ (ɴɪᴄᴋᴇʟ), ᴘᴛ (ᴘʟᴀᴛɪɴᴜᴍ), ғᴇ (ɪʀᴏɴ) ᴇᴛᴄ,. ᴏʀ ᴄʜᴇᴍɪᴄᴀʟ ᴄᴏᴍᴘᴏᴜɴᴅs ʟɪᴋᴇ ᴀʟᴄᴏʜᴏʟs, ᴋᴍɴᴏ4ᴇᴛᴄ.
6)both a)and b)
I do not know the answer
it's cost increases and unit of rate of an tvc decrease
Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth.
◆ answer -
(a) The residual air in lungs slightly decreases the efficiency of respiration in mammals
◆ Explaination -Residual capacity is that portion of air contained in the lungs which can not be expelled even by the most violent expiratory effort.Residual air is actually part of dead space & it doesn't play active part in respiration.Therefore, residual air in lungs dont affect efficiency of respiration.
Hope this helps you understand..
Hey plz reply yaar what's happening hey dear
I think that the d part is answer
Respiratory process could be achieved due to which it exchanges O2 and CO2 range from the gas. This is suitable for taking right inspiration to ensure the cells, tissues, and includes major organs of the body.
It must undergo with flat shape of these organisms to consider surface area of diffusion. Thus, it allows air flows in one direction while blood flows in another efficient gas exchange.