Answer:
The correct option is C.
Solutions with low pH values have sour taste.
Explanation:
Low pH value show acidic property which can be define as , -log of conc. of hydrogen ion.
Acid has following properties
- Sour taste
- Turn blue litmus into red
- corrosive
-OH group: Base have OH groups. So it is not correct option so it not correct for low pH i.e. acid
turns litmus paper blue: Base turn red litmus into blue, so it not correct for low pH i.e. acid
feels slippery: Bases are mostly slippery like soap
tastes sour: Sour taste is for acid and bitter taste is for base. So it is correct option for acid
Answer: one molecule of O2.
Explanation: sweet i just took a guess but I believe that if 3 o2 molecules - 2 h2 molecules I think that its just basic maths and it is C because 3-2 = 1 and its o2 remaining, sorry if I’m wrong.
Answer : The correct option is a slow-moving proton.
Explanation :
The de Broglie's equation is,
where,
= wavelength of particle
h = Planck's constant
m = Mass of particle
v = speed of particle
From the de Broglie's equation, we conclude that there is an inverse relationship between the wavelength and speed or mass of particle. That means the lower the speed and mass of particle, higher will be the wavelength of particle and vice-versa.
So, a slow-moving proton have a larger wavelength due to slow speed of proton.
