Question : Blowing air with open pipe is an example of:

Option 1: Isothermal process

Option 2: Isochronic process

Option 3: Isobaric process

Option 4: Adiabatic process

Question : In an E-R diagram , ellipse represents

Option 1: relation

Option 2: entity

Option 3: fields

Option 4: key

Question : Select the most appropriate homophones to fill in the blanks.

I got _____ while replacing the _____.

Option 1: tyre, tire

Option 2: tyred, tire

Option 3: tired, tier

Option 4: tired, tyre

Question : A sells a cycle to B at a profit of 33% and B sells it to C at a loss of 25%. If C bought the cycle for INR 3059, then the cost price of it for A was:

Option 1: INR $3066 \frac{2}{3}$

Option 2: INR $2044 \frac{1}{3}$

Option 3: INR $4054 \frac{1}{3}$

Option 4: INR $5014 \frac{2}{3}$

Question : $\cos^4 A-\sin^4 A$ is equal to:

Option 1: $2 \cos^2 A+1$

Option 2: $1-2 \sin ^2 A$

Option 3: $2 \sin^2 A-1$

Option 4: $-\left(2 \sin^2 A+1\right)$