Question : The heat value of the combustion of Gasoline is

Option 1: 12600 kJ/kg

Option 2: 14600 kJ/kg

Option 3: 39400 kJ/kg

Option 4: 47000 kJ/kg

Question : The average weight of Group A and Group B is 12 kg and 24 kg, respectively. The ratio of the members in group A to group B is 1 : 2. Find the combined average of both groups.

Option 1: 16 kg

Option 2: 22 kg

Option 3: 20 kg

Option 4: 18 kg

Question : What is the unit of relative density?

Option 1: kg/m

Option 2: kg/m²

Option 3: kg/m³

Option 4: It has no unit

Question : The greatest value of $\sin ^{4 }\theta +\cos ^{4}\theta$ is:

Option 1: $2$

Option 2: $3$

Option 3: $\frac{1}{2}$

Option 4: $1$

Question : The weight of a bucket when filled fully with water is 17 kg. If the weight of the bucket when half filled with water is 13.5 kg. What is the weight of the empty bucket?

Option 1: 12 kg

Option 2: 2 kg

Option 3: 10 kg

Option 4: 7 kg

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: $3:2$