Question : Which light is least effective in photosynthesis ?

Option 1: Blue light

Option 2: Green light

Option 3: Red light

Option 4: Sunlight

Question : Which one of the following processes is responsible for the glittering of air bubbles rising through water?

Option 1: Reflection of light

Option 2: Refraction of light

Option 3: Total internal reflection of light

Option 4: Scattering of light

Question : Select the most appropriate ANTONYM of the given word.

Dispatch

Option 1: Acquire

Option 2: Transmit

Option 3: Deliver

Option 4: Bulletin

Question : Directions: Select the option that represents the correct order of the given words as they would appear in an English dictionary.
1. Refinery
2. Reflect
3. Reference
4. Refugee
5. Refillable
6. Reformist

Option 1: 3, 5, 1, 2, 6, 4

Option 2: 5, 1, 3, 2, 4, 6

Option 3: 5, 1, 3, 2, 6, 4

Option 4: 3, 1, 5, 2, 6, 4

Question : In a coloured picture of blue and yellow colours, blue and yellow colours are used in the ratio of 4 : 3, respectively. If in the upper half, blue : yellow is 2 : 3, then in the lower half, blue : yellow is:

Option 1: $1:1$

Option 2: $2:1$

Option 3: $26:9$

Option 4: $9:26$