This post provides the complete answer key and detailed explanations for the 50 MCQs exercise on Conjunctions and Sentence Combinations, tailored to meet the needs of MDCAT and NUMS aspirants. Each explanation is structured according to the PMDC syllabus and reflects question trends commonly found in MDCAT and NUMS Past Papers. The breakdown of each answer helps clarify the function of conjunctions within sentence structures and highlights the grammatical logic behind combinations, enabling students to strengthen their concept clarity and avoid common errors in the actual exam.
Q.1
Correct option: C. Unless
Explanation: “Unless” means “except if,” indicating that missing the bus will happen if we do not leave now. It sets a condition for avoiding the outcome. “If” would imply that leaving now causes missing the bus, which is illogical. “Without” is grammatically incorrect here.
Q.2
Correct option: A. Although
Explanation: “Although” introduces a contrast between the speaker’s discovery and the other person’s attempt to hide the truth. “However” is an adverb and cannot connect clauses, while “If” introduces a condition, which is irrelevant here.
Q.3
Correct option: A. Because
Explanation: “Because” explains the reason for not enjoying the outing (the cold weather). “So” indicates a result, not a cause, and “though” introduces a contrast, which doesn’t fit the context.
Q.4
Correct option: A. Because
Explanation: “Because” provides the reason for not buying the ring (lack of money). “So” would incorrectly imply a result, and “however” is used for contrast, not causation.
Q.5
Correct option: B. because
Explanation: “Because” directly explains the cause of the wet streets (the rain). “For” can also indicate reason but is more formal and less common in this context.
Q.6
Correct option: A. Such
Explanation: “Such” is used with “a frightening experience” to emphasize the degree of fear. “So” would require an adjective (e.g., “so frightening”), and “but” introduces contrast, which is irrelevant here.
Q.7
Correct option: B. Despite
Explanation: “Despite” introduces a contrast between being rich/famous and being humble. “Though” would require a clause (e.g., “Though she is rich”), and “however” is an adverb, not a conjunction.
Q.8
Correct option: B. however
Explanation: “However” is used to contrast the effort (working day and night) with the outcome (missing the deadline). “Though” would require restructuring the sentence, and “but” doesn’t fit the semicolon structure.
Q.9
Correct option: C. Either could be used here
Explanation: Both “for” and “because” can introduce the reason for quitting. “For” is more formal but grammatically correct in this context.
Q.10
Correct option: A. so that
Explanation: “So that” indicates the purpose of learning English (to get a better job). “Such that” is used for outcomes or results, not purposes.
Q.11
Correct option: A. As
Explanation: “As” explains the reason for forgetting to lock the door (being in a hurry). “Though” would imply contrast, and “If” introduces a condition, both of which are irrelevant.
Q.12
Correct option: A. Though
Explanation: “Though” introduces a contrast between the task being tough and the speaker managing to finish it. “As” would imply causation, and “Despite” requires a noun phrase (e.g., “Despite the difficulty”).
Q.13
Correct option: C. that
Explanation: “That” introduces the reason (a noun clause) for her hatred. “Whose” and “whom” are pronouns and do not fit the context.
Q.14
Correct option: C. Either could be used here
Explanation: Both “that” and “whom” can refer to the architect in this relative clause. “Whom” is more formal but grammatically correct.
Q.15
Correct option: A. Where
Explanation: “Where” refers to the location (the store) where Indian spices are sold. “Which” and “that” would refer to the store as an object, not a place.
Q.16
Correct option: C. Because
Explanation: “Because” provides the reason for losing the job (not meeting the deadline). “As” and “Since” can also indicate reason but are less direct in this context.
Q.17
Correct option: C. because
Explanation: “Because” directly explains the reason for leaving (having had enough). “As” and “Since” are less emphatic and more formal.
Q.18
Correct option: A. As
Explanation: “As” explains the reason for not getting up early (the holiday). “So” indicates a result, and “Though” introduces contrast, both of which are irrelevant.
Q.19
Correct option: B. since
Explanation: “Since” is used with a specific point in time (Friday). “From” is incorrect with time expressions, and “for” requires a duration (e.g., “for three days”).
Q.20
Correct option: A. Because
Explanation: “Because” explains the reason for failing the test (not studying). “So” indicates a result, and “Though” introduces contrast, neither of which fits.
Q.21
Correct option: C. so
Explanation: “So” indicates the result of breaking his leg (inability to walk). “As” and “because” would incorrectly imply causation in the opposite direction.
Q.22
Correct option: A. So
Explanation: “So” shows the result of the rain (staying at home). “As” and “because” would imply the rain was caused by staying home, which is illogical.
Q.23
Correct option: A. As
Explanation: “As” explains the reason for feeling lethargic (the hot afternoon). “Though” would imply contrast, and “If” introduces a condition, both of which are irrelevant.
Q.24
Correct option: B. Though
Explanation: “Though” introduces a contrast between being busy and making time for family. “As” would imply causation, and “If” introduces a condition.
Q.25
Correct option: A. even though
Explanation: “Even though” emphasizes that he will do it despite the danger. “If” and “even if” would imply hypothetical situations, which are not the case here.
Q.26
Correct option: C. Either could be used here
Explanation: Both “as if” and “as though” express the manner of his smiling (seeming to know everything). They are interchangeable in this context.
Q.27
Correct option: A. Unless
Explanation: “Unless” means “except if,” indicating the speaker will leave only if the money is returned. “If” and “as” do not convey this conditional meaning.
Q.28
Correct option: A. Where
Explanation: “Where” refers to the location (the village) of his birth. “There” is an adverb and cannot introduce a clause, and “which” would refer to an object, not a place.
Q.29
Correct option: C. Though
Explanation: “Though” contrasts his popularity with his questionable acting skills. “As” would imply causation, and “If” introduces a condition.
Q.30
Correct option: A. Although
Explanation: “Although” contrasts being taken to the hospital with not being saved. “Despite” requires a noun phrase, and “If” introduces a condition.
Q.31
Correct option: A. If
Explanation: “If” introduces the condition (not getting the loan) that will lead to shelving the project. “Unless” would mean the opposite, and “As” is incorrect here.
Q.32
Correct option: A. Unless
Explanation: “Unless” means “except if,” indicating that quitting drinking is the only way his health will improve. “If” and “Whether” do not convey this meaning.
Q.33
Correct option: A. That
Explanation: “That” introduces the reported statement (she was going abroad). “What” and “which” are incorrect in this context.
Q.34
Correct option: A. so that
Explanation: “So that” indicates the purpose of working hard (to finish the project on time). “Such that” is used for outcomes, and “so” alone is incomplete.
Q.35
Correct option: A. As if
Explanation: “As if” describes the manner of her smiling (seeming to know everything). “Even if” and “Though” are irrelevant here.
Q.36
Correct option: C. Either could be used here
Explanation: Both “if” and “whether” can introduce indirect questions. They are interchangeable in this context.
Q.37
Correct option: A. As
Explanation: “As” explains the reason for not playing (being injured). “Though” would imply contrast, and “If” introduces a condition.
Q.38
Correct option: A. As
Explanation: “As” explains the reason for feeling awkward (being the only boy). “Since” and “Because” are also correct but less commonly used in this context.
Q.39
Correct option: C. Either could be used here
Explanation: Both “if” and “whether” can introduce indirect questions. They are interchangeable here.
Q.40
Correct option: A. Until
Explanation: “Until” indicates the time up to which they waited (his arrival). “Up to” is incorrect in this context.
Q.41
Correct option: B. Though
Explanation: “Though” contrasts inviting many people with no one arriving. “As” would imply causation, and “Even as” is incorrect here.
Q.42
Correct option: A. If
Explanation: “If” introduces the hypothetical situation (no electricity) to ask how people would live. “Whether” and “unless” are incorrect here.
Q.43
Correct option: A. But
Explanation: “But” contrasts inviting them with their not coming. “Though” and “since” are incorrect in this context.
Q.44
Correct option: B. neither
Explanation: “Neither” pairs with “nor” to indicate she is not rich or influential. “Either” and “not” are incorrect here.
Q.45
Correct option: B. unless
Explanation: “Unless” means “except if,” indicating that mending ways is necessary to avoid trouble. “If” and “whether” are incorrect.
Q.46
Correct option: A. Such
Explanation: “Such” is used with “a pleasant morning” to emphasize the degree of pleasantness. “So” would require an adjective (e.g., “so pleasant”).
Q.47
Correct option: A. Though
Explanation: “Though” contrasts the rain with going for a walk. “Despite” requires a noun phrase, and “However” is an adverb.
Q.48
Correct option: A. However
Explanation: “However” contrasts the cold weather with enjoying the evening. “Though” and “despite” are incorrect in this structure.
Q.49
Correct option: A. Despite
Explanation: “Despite” contrasts burning the midnight oil with not meeting the deadline. “However” and “Though” are incorrect here.
Q.50
Correct option: A. But
Explanation: “But” contrasts his experience with not being the best. “However” is an adverb, and “despite” requires a noun phrase.
