Home
Class 12
BIOLOGY
Time required for cobalt chloride paper ...

Time required for cobalt chloride paper to turn pink when planed just above water surface is called

A

Evaporation time

B

Water test time

C

Cobalt chloride test time

D

Leaf test time.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the time required for cobalt chloride paper to turn pink when placed just above the water surface, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Context**: The question is about cobalt chloride paper, which is a chemical indicator that changes color based on moisture. When it comes into contact with water vapor, it turns from blue to pink. 2. **Identify the Setup**: The cobalt chloride paper is placed just above the surface of the water. This means it is not submerged but is exposed to the humidity created by the water below. 3. **Define the Time Measurement**: The time required for the cobalt chloride paper to change color (turn pink) indicates the amount of moisture present in the air above the water surface. 4. **Analyze the Options**: - **Evaporation Time**: This refers to the time taken for a liquid to turn into vapor, which is not what the question is asking. - **Water Test Time**: This option relates to the time taken for the cobalt chloride paper to change color due to the moisture in the air above the water. This is the correct answer. - **Cobalt Chloride Test Time**: This is not a standard term and does not apply here. - **Leave Test Time**: This option does not relate to the context of cobalt chloride paper and moisture. 5. **Select the Correct Answer**: Based on the analysis, the correct answer is **Water Test Time**, as it accurately describes the time taken for the cobalt chloride paper to turn pink when exposed to moisture from the water surface. ### Final Answer: The time required for cobalt chloride paper to turn pink when placed just above the water surface is called **Water Test Time**. ---
Promotional Banner

Topper's Solved these Questions

  • Plant Growth and Movements

    DINESH PUBLICATION ENGLISH|Exercise CYG|20 Videos

  • PLANT BREEDING AND DISEASE CONTROL

    DINESH PUBLICATION ENGLISH|Exercise Check your Grasp|10 Videos

  • PLATYHELMINTHES-THE FLAT WORMS

    DINESH PUBLICATION ENGLISH|Exercise check your grasp|9 Videos

Similar Questions

Explore conceptually related problems

Which gas turns blue cobalt chloride paper light pink?

When transfer of pollen grains occurs over the surface of water , it is called

An organic compound (A) on heatig produces two gases (B) and (C) and neutral oxide (D) which turns cobalt chloride paperr pink. Gas (B) turns lime water milky and produces an acidic solution with water. Gas (C) produces a poisonous gas (E) with chlorine gas, the gas, this gas with ammonia gives an organic compound (F) which on further reaction with (D) gives NH_(3) gas. Then, compound (A) and (F) can be found as:

The minimum force required to separate a light glass plate of perimeter 5m from a water surface is (Given surface tension of water = 70 xx 10^(-3) N/m)

A wooden block in the form of a uniform cylinder floats with one-third length above the water surface. A small chip of this block is held at rest at the bottom of a container containing water to a height of 1 m and is then released. The time in which it will rise to the surface of water is =10 m//s^(2) )

When an air bubble rise from the bottom of a deep lake to a point just below the water surface, the pressure of air inside the bubble

A point source of light is placed inside water and a thin converging lens of focal length f is placed just outside the surface of water. The image of source is formed at a distance of 50 cm from the surface of water. When the lens is placed just inside the water surface the image is formed at a distance of 40 cm from the surface of water. if focal length of the lens in air is f=(100k)/8 cm, then find the value of k. (given refractive index of lens is 3/2 and that of water is 4/3 and in both cases image is formed inside water for the viewer in air).

Water runs into an inverted conical tent at the rate of 20 ft^3 / min and leaks out at the rate of 5 ft^3 /min .The height of the water is three times the radius of the water's surface. The radius of the water surface is increasing when the radius is 5 ft, is

What do you observe when Cobalt chloride paper is introduced in water vapour, Write balanced equations for each of the above.

A ball is dropped from a height of 20m above the surface of water in a lake. The refractive index of water is 4//3 . A fish inside the lake , in the line fall of the ball, is looking at the ball. At an instant when the balll is 12.8m above the water surface, the fish sees the speed of ball as .