Question : Which colour is formed when Red and Green are mixed?

Option 1: Light blue

Option 2: Yellow

Option 3: White

Option 4: Grey

Question : A man with colour blindness will see red as

Option 1: Yellow

Option 2: Blue

Option 3: Green

Option 4: Voilet

Question : A person who is colourblind cannot distinguish between

Option 1: Black and yellow

Option 2: Red and green

Option 3: Yellow and white

Option 4: Green and blue

Question : Acid changes the colour of blue litmus to ______.

Option 1: yellow

Option 2: red

Option 3: pink

Option 4: orange

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: $9:26$