1. The critical point of a substance is defined as the point where:
2. In a vapor-compression refrigeration cycle, the refrigerant enters the compressor as:
3. In which thermodynamic process is the heat supplied entirely used for doing work?
4. In the superheated region of a pure substance, the temperature is:
5. In an isothermal process, the internal energy of the system:
6. The second law of thermodynamics states that:
7. During an adiabatic expansion of an ideal gas, the temperature of the gas:
8. Which of the following is true for a saturated liquid?
9. In an isochoric process, which thermodynamic quantity remains constant?
10. The efficiency of a Carnot engine depends on:
11. In the Diesel cycle, the heat addition occurs at:
12. The Rankine cycle is used in:
13. The enthalpy of vaporization is:
14. Stress is defined as:
15. Which of the following cycles has the highest theoretical efficiency?
16. Find the smallest five-digit number that is divisible by 12, 15, and 18.
17. Solve for xxx: log2(x+3)=4\log_2 (x + 3) = 4log2(x+3)=4.
18. What is the value of log525\log_5 25log525?
19. The ratio of the ages of two persons is 5:7. If the sum of their ages is 48 years, what is the age of the older person?
20. A sum of Rs. 1500 is due in 3 years at 12% simple interest. What is the True Discount?
21. What is the square root of 900900900?
22. A recipe calls for ingredients in the ratio 3:4:5. If 180 grams of the first ingredient is used, how much of the second ingredient is needed?
23. The average of 15 consecutive odd numbers is 47. What is the largest number in the series?
24. The average of three numbers is 27. If one of the numbers is 30 and the other is 25, what is the third number?
25. If 5 men can complete a task in 10 days, how many days will it take for 10 men to complete the same task?
26. The average of 8 consecutive even numbers is 24. What is the smallest of these numbers?
27. The radius of a sphere is 7 cm. What is the surface area of the sphere?
28. Which of the following is a quadratic expression?
29. A person divides a sum of money in the ratio 2:3:4. If the total amount is Rs. 5400, how much does the second person receive?
30. The average of 11 numbers is 50. If the average of the first 6 numbers is 49 and the average of the last 6 numbers is 52, find the 6th number.
