1.

Four students (A), (B), (C) and (D) independently observed the evaporation of water under different conditions, and recorded the temperature of water at regular intervals as shown below. Student Placing of experimental set up in/under Temperature recording for 15 minutes (A) sun increased gradually (B) open air decreased gradually (C) a fan initially increased, then became constant (D) a corner of the room initially increased, then gradually decreased The correct recording of observations is that of the student :(1) (A)(2) (B)(3) (C)​(4) (D)

Answer» Four students (A), (B), (C) and (D) independently observed the evaporation of water under different conditions, and recorded the temperature of water at regular intervals as shown below.




























Student Placing of experimental set up in/under Temperature recording for 15 minutes
(A) sun increased gradually
(B) open air decreased gradually
(C) a fan initially increased, then became constant
(D) a corner of the room initially increased, then gradually decreased

The correct recording of observations is that of the student :

(1) (A)

(2) (B)

(3) (C)

​(4) (D)


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