SOLUTIONS Q.01: Choose the correct answer for the given ones. (i) Molarity of pure water is: (a) 1 (b) 18 (c) 55.5 (d) 6 ANSWER: (c) 55.5 EXPLANATION: Molarity means number of moles of solute present in liter solution. In…
CHEMICAL EQUILIBRIUM Q.01: Choose the correct answer: (i) For which system does the equilibrium constant, Kc, has units of (conc.)-1? (a) N2 + 3H2 ⇌ 2NH3 (b) H2 + I2 ⇌ 2HI (c) 2NO2 ⇌ N2O4 (d) 2HF ⇌ H2…
THERMOCHEMISTRY Q.01: Choose the correct answer: (i) If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air: (a) Remains constant (b) Increases (c) Decreases (d) Remains unchanged ANSWER: (c)Decreases…
CHEMICAL BONDING Q.01: Select the most suitable answer for the given one. 1) An ionic compound A+B– is most likely to be formed when: (a) The ionization energy of A is high and electron affinity of B is low. (b)…
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Dear Students and Respected Teachers! These are Pakistan Studies-10th up-to-date papers of all Punjab & AJK boards. These are five year past papers (2018-2023) of annual exams under all the nine educational boards of Punjab and AJK board. More papers…
Dear Students and Respected Teachers! These are Pakistan Studies-9th up-to-date papers of all Punjab & AJK boards. These are five year past papers (2018-2023) of annual exams under all the nine educational boards of Punjab and AJK. Remember, 2020 papers…
Dear Students and Respected Teachers! These are Tarjama-tul-Quran-9th up-to-date papers of all Punjab & AJK boards. These are six year past papers (2018-2023) of annual exams under all the nine educational boards of Punjab and AJK board. Remember, 2020 papers…
Dear Students and Respected Teachers! These are Islamiyat-10th up-to-date papers of all Punjab & AJK boards. These are six year past papers (2018-2023) of annual exams under all the nine educational boards of Punjab and AJK. More papers relavant to…
Dear Students and Respected Teachers! These are Islamiyat-9th up-to-date papers of all Punjab & AJK boards. These are five year past papers (2018-2023) of annual exams under all the nine educational boards of Punjab and AJK. Remember, 2020 papers are…