Obs.
No. Water sample Micro-organisms/
water planktons found
1. Pond water (i)......................
(ii)......................
(iii) .................
2. Lake water (i) .....................
(ii) ....................
(iii) ....................
3. River water (i) ...................
(ii) ...................
(iii) ....................

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Solution

1. Pond water:
i) Nostac
ii) Amoeba
iii) Paramecium
2. Lake water:
i) Escherichia coli
ii) Vibrio cholerae
iii) Giardia lamblia
3. River water:
i) Shigella
ii) Salmonella
iii) Cryptosporidium

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Similar questions

Question 3

Which of the following are not the liquid forms of water?
(i) Snow
(ii) Lake water
(iii) River water
(iv) Water vapour
(v) Ice

Choose the correct combination from the options given below.
(a) (i), (iv) and (v)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iv) only

Q. Arrange the following options in ascending order of their BOD value:

(I) Sample of highly polluted pond water
(II) Sample of unpolluted pond water
(III) Distilled water

Q. Explain briefly:
(i) Capillary water (ii) Osmosis (iii) Aeroponics

Question 1
Which of the following correctly represents 360 g of water?

(i) 2 moles of $H_{2} O$

(ii) 20 moles of water

(iii) $6.022 \times 10^{23}$ molecules of water

(iv)

1.2044 \times 10^{25}

molecules of water
(a) (i)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)

Which of the following correctly represents 360 g of water?

(i) $2 m o l e s o f$ $H_{2} O$
(ii) $20 m o l e s o f w a t e r$
(iii) $6.022 \times 10^{23} m o l e c u l e s o f w a t e r$
(iv) $1.2044 \times 10^{25} m o l e c u l e s o f w a t e r$

(a) (i)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)

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Obs. No.	Water sample	Micro-organisms/ water planktons found
1.	Pond water	(i)...................... (ii)...................... (iii) .................
2.	Lake water	(i) ..................... (ii) .................... (iii) ....................
3.	River water	(i) ................... (ii) ................... (iii) ....................

1. Pond water: i) Nostac ii) Amoeba iii) Paramecium2. Lake water: i) Escherichia coli ii) Vibrio cholerae iii) Giardia lamblia3. River water: i) Shigella ii) Salmonella iii) Cryptosporidium

1. Pond water:
i) Nostac
ii) Amoeba
iii) Paramecium
2. Lake water:
i) Escherichia coli
ii) Vibrio cholerae
iii) Giardia lamblia
3. River water:
i) Shigella
ii) Salmonella
iii) Cryptosporidium