Correct answer: Cave Hira. The first revelation (Surah Al-Alaq) came in the Cave of Hira on Jabal al-Nour near Makkah.
Correct answer: The student exclaimed with joy that he had won the scholarship. “Hurrah” expresses joy, so the reporting verb is “exclaimed with joy that”, and “has won” changes to “had won”.
Correct answer: Her doctor will have been visited by her by 7:00 PM. The future perfect passive is “will have been + past participle”, and the time phrase must be kept.
Correct answer: Period. A period (full stop) ends a statement.
Correct answer: To avoid restarting a conflict. The idiom means not to disturb a situation that is calm, so as to avoid restarting a conflict.
Correct answer: Boils. The proverb is “A watched pot never boils”, meaning time seems to pass slowly when you wait anxiously.
Correct answer: Yield. To prevail is to win or dominate, and its opposite is to yield or give way.
Correct answer: Subtle. Imperceptible means so slight that it is hardly noticed, which is close to subtle.
Correct answer: to. “Be married to” is the correct collocation.
Correct answer: Galaxy : Star. A continent contains many countries, just as a galaxy contains many stars (a larger whole to its parts).
Correct answer: Getting married. “Tie the knot” means to get married.
Correct answer: Easily. “Easily” describes how an action is done, so it is an adverb.
Correct answer: Slew. “Slay” is irregular: slay – slew – slain.
Correct answer: 43.75%. New extension = 0.75d, so new energy = (0.75)² E = 0.5625E. The decrease is 1 − 0.5625 = 0.4375, i.e. 43.75%.
Correct answer: 269. After 3 minutes: 428 − 3 × 23 = 359 °C. The next 6 minutes (to minute 9) fall by 6 × 15 = 90 °C, giving 269 °C.
Correct answer: 285. A 30-day month beginning on Sunday has 5 Sundays and 25 other days. Total = 5 × 510 + 25 × 240 = 8550, and 8550 ÷ 30 = 285.
Correct answer: 90. For an odd power n, aⁿ + bⁿ is divisible by a + b. Here 47 + 43 = 90, so the sum is divisible by 90.
Correct answer: 1/2. √2 − 1/√2 = (2 − 1)/√2 = 1/√2, and (1/√2)² = 1/2.
Correct answer: 0.06. 0.1 × 0.6 = 0.06, since 1 × 6 = 6 and there are two decimal places in total.
Correct answer: To remove malware. Antivirus software detects and removes malware in general, including viruses, worms, and trojans.
Correct answer: Landscape. Page orientation can be portrait or landscape.
Correct answer: Projector. A projector displays a presentation onto a large screen or wall.
Correct answer: No border. The “No Border” option removes borders from the selected cells.
Correct answer: =. A formula in Excel starts with an equals sign (=).
Correct answer: Portable document format. PDF stands for Portable Document Format.