Navigation Menu

Public Sector Private Sector Admissions in Punjab Admissions in KPK Admissions in Sindh Admissions in Balochistan Admissions in AJK

Scholarships in USA Scholarships in UK Scholarships in Canada Scholarships in Australia Scholarships in Europe Scholarships in Asia Scholarships in Africa

Public Sector Private Sector Semi-Govt (NUMS)

MDCAT NCAT Intelligence Test

Blog Latest Notices

About Us Contact Us Disclaimer Privacy Policy Admin Login

All Open Admissions

Public Sector Private Sector Admissions in Punjab Admissions in KPK Admissions in Sindh Admissions in Balochistan Admissions in AJK

Scholarships in USA Scholarships in UK Scholarships in Canada Scholarships in Australia Scholarships in Europe Scholarships in Asia Scholarships in Africa

Medical and Dental Colleges

Public Sector Private Sector Semi-Govt (NUMS)

MDCAT NCAT Intelligence Test

Blog Latest Notices

Home /
Online Quiz /
NCAT /
Practice Test /
Chemistry /
Thermo Chemistry /
Quiz 6

100% Free

NCAT - Practice Test - Chemistry - Thermo Chemistry Quiz

Attempt 10 MCQs on NCAT - Practice Test - Chemistry - Thermo Chemistry | Quiz 6

51. What is the change in internal energy for a constant volume process?

ΔU = q_v
ΔU = q_p
ΔU = 0
ΔU = w

52. What is ΔU for an adiabatic process?

ΔU = w
ΔU = q
ΔU = 0
ΔU = -w

53. Are perpetual motion machines that create energy possible?

Impossible
Possible in theory
Possible with catalysts
Possible at low temperature

54. For a cyclic process, what is true?

Net heat = net work
Net heat = -net work
Net heat = 0
Net work = 0

55. How does C_p compare to C_v for an ideal gas?

C_p > C_v
C_p < C_v
C_p = C_v
C_p = 0

56. What does Hess's law state about enthalpy change?

Independent of path
Dependent on path
Always negative
Always positive

57. How is Hess's law used?

Combining known reactions
Measuring directly
Using temperature change
Using pressure change

58. Calculate ΔH for formation of CO from C and O2.

-110.5 kJ
-676.5 kJ
+110.5 kJ
-393.5 kJ

59. What is the term for ΔH when one mole of compound forms from elements?

Standard enthalpy of formation
Standard enthalpy of combustion
Standard enthalpy of reaction
Standard free energy

60. What is the formula using ΔH_f° to find ΔH°_rxn?

Σ ΔH_f°(products) - Σ ΔH_f°(reactants)
Σ ΔH_f°(reactants) - Σ ΔH_f°(products)
Σ ΔH_f°(products) + Σ ΔH_f°(reactants)
ΔH_f°(products) only

← Back to Quiz Sets

Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

Medical Colleges in Pakistan

Explore medical institutions city‑wise – public & private.

Lahore Karachi Islamabad Rawalpindi Peshawar Quetta Multan Faisalabad Sialkot Gujranwala Hyderabad Abbottabad Mardan Bahawalpur Sukkur

Browse All Medical Colleges →

Advertisement

MDCAT Past Papers Free Online Quizzes

Country Wise Scholarships

🇵🇰 Pakistan's Scholarships 🇺🇸 USA's Scholarships 🇬🇧 UK's Scholarships 🇨🇦 Canada's Scholarships 🇨🇳 China's Scholarships 🇸🇦 Saudi Arabia's Scholarships 🇦🇪 UAE's Scholarships 🇲🇾 Malaysia's Scholarships 🇪🇺 Europe's Scholarships 🇰🇷 South Korea's Scholarships

Online Free Quiz

MDCAT NCAT Intelligence Test

View All Quizzes →

Follow Us

Facebook YouTube WhatsApp Instagram

Stay updated with latest news & updates

Aggregate Calculator

Calculate your MDCAT aggregate for MBBS admissions

Calculate Now →

© 2026 Pak Admissions. All Rights Reserved.

About Us Contact Us Disclaimer Privacy Policy Admin Login