Question : Bio - diseal is mostly produced by:

Option 1: Myrtaceae

Option 2: Malvaceae

Option 3: Liliaceae

Option 4: Euphorbiaceae

Question : The harmful substances produced by the microbes are known as:

Option 1: antibiotics

Option 2: pollutants

Option 3: hormones

Option 4: toxins

Question : The remainder of the term $9+9^2+\ldots+9^{(2 n+1)}$ when divided by 6 is:

Option 1: 1

Option 2: 4

Option 3: 2

Option 4: 3

Question : E is the midpoint of the median AD of $\triangle ABC. BE$ is joined and produced to meet AC at F. F divides AC in ratio:

Option 1: 2 : 3

Option 2: 2 : 1

Option 3: 1 : 3

Option 4: 3 : 2

Question : Directions: Arrange the following in ascending order.
1. Centimetre
2. Kilometre
3. Decimetre
4. Metre

Option 1: 1, 3, 4, 2

Option 2: 2, 4, 3, 1

Option 3: 3, 1, 2, 4

Option 4: 4, 2, 1, 3

Question : If $P:Q=1: 3, Q:R=3:4,$ and $R: S=2:1$, then what is the value of $P:S$?

Option 1: $3:1$

Option 2: $2:1$

Option 3: $1:2$

Option 4: $3:2$