Class 10 practice
Class 10 reasoning questions.
Reasoning questions for Class 10, at the level of students aged 15–17, each with its answer and a short explanation. Try each one before opening the answer.
Rohan starts from his school and walks 4 km north. He turns right and walks 3 km. What is the shortest straight-line distance between Rohan and his starting point?
Level 1 of 5Show the answer
Answer: 5 km
Rohan's path forms a right-angled triangle with legs of 4 km and 3 km. By the Pythagorean theorem, the straight-line displacement is the square root of (16 + 9), which equals 5 km.
Thermometer is to Temperature as Barometer is to which of the following?
Level 1 of 5Show the answer
Answer: Atmospheric pressure
A thermometer is an instrument designed to measure temperature, just as a barometer is an instrument used specifically to measure atmospheric pressure.
- True or false?
Suppose every mango harvested in Ratnagiri is sweet. Selecting a sweet mango from a fruit stall confirms that the mango came from Ratnagiri.
Level 1 of 5Show the answer
Answer: False
All Ratnagiri mangoes are sweet, but sweet mangoes can also originate from other regions.
- True or false?
Consider four consecutive integers. The product of these four consecutive integers is always an even number.
Level 1 of 5Show the answer
Answer: True
Any set of four consecutive integers contains at least two even integers. The product of any collection containing an even integer must always be even.
- True or false?
Four runners, Dev, Esha, Farhan, and Gita, finish a race with distinct timings. Dev finishes ahead of Esha. Farhan finishes behind Gita but ahead of Dev. Therefore, Gita finishes first.
Level 1 of 5Show the answer
Answer: True
Arranging the runners in sequence yields Gita, Farhan, Dev, and then Esha. Thus, Gita is first.
- Fill in the blank.
Because all herbivores survive on plants and every deer is classified as an herbivore, every deer logically ___ (depend) on plants for food.
Level 1 of 5Show the answer
Answer: depends
By direct deduction from the categorical premises, every member of the deer class depends on plants for nourishment.
In a secret code, the word TRAIN is written as USBJO. Following the identical coding rule, how should the word METRO be written?
Level 2 of 5Show the answer
Answer: NFUSP
Each letter shifts forward by one position in the alphabet: M becomes N, E becomes F, T becomes U, R becomes S, and O becomes P.
Farhan starts from his house in Kochi and cycles four kilometres east. He turns left and cycles three kilometres. Then, he turns right and cycles four kilometres before stopping. How far east has Farhan travelled from his starting point?
Level 2 of 5Show the answer
Answer: 8 kilometres
Farhan travels 4 kilometres east initially, turns north for 3 kilometres, and then travels 4 kilometres east again. His total eastward displacement is 4 + 4 = 8 kilometres.
The third day of a thirty-day month is a Tuesday. What day of the week will the twenty-fifth day of the same month be?
Level 2 of 5Show the answer
Answer: Wednesday
The difference between the 25th and 3rd days is 22 days. Dividing 22 by 7 leaves a remainder of 1 day: Tuesday plus one day is Wednesday.
In a certain code language, DELHI is written as FGNJK. Following the same pattern, how is the city name PATNA written in that code?
Level 2 of 5Show the answer
Answer: RCVPC
Each letter shifts forward by two positions in the alphabet: P becomes R, A becomes C, T becomes V, N becomes P, and A becomes C, yielding RCVPC.
In a standard non-leap calendar year, the 1st of January falls on a Monday. On which day of the week will the 26th of January fall in that same year?
Level 2 of 5Show the answer
Answer: Friday
The duration between January 1 and January 26 is 25 days. Dividing 25 by 7 leaves a remainder of 4. Advancing 4 days past Monday gives Friday.
If 15th August of a regular year falls on a Friday, on which day of the week will 5th September of the same year fall?
Level 2 of 5Show the answer
Answer: Friday
August has 31 days. The remaining days in August are 16, plus 5 days in September, giving 21 days. Since 21 is divisible by 7, the day remains Friday.
Four metal cylinders—P, Q, R, and S—are weighed in a physics laboratory. Cylinder P is heavier than cylinder Q. Cylinder R is lighter than cylinder S. Cylinder Q is heavier than cylinder S. Which cylinder is the lightest among the four?
Level 2 of 5Show the answer
Answer: Cylinder R
The relations show P > Q, Q > S, and S > R. Combining these inequalities produces the descending order P > Q > S > R. Cylinder R is the lightest.
Three boxes are labelled "Apples", "Oranges", and "Mix". Every box has an incorrect label. Anand draws an apple from the box labelled "Mix". Which contents must be inside the box labelled "Oranges"?
Level 2 of 5Show the answer
Answer: A mixture of apples and oranges
The box labelled "Mix" holds apples. Since the "Oranges" box cannot hold oranges, it must hold the mix, leaving oranges for the "Apples" box.
If a school bus travels along MG Road, it arrives at the school campus before 8:00 AM. Today, the bus arrived at the campus at 8:15 AM. Which statement must logically follow?
Level 2 of 5Show the answer
Answer: The bus did not travel along MG Road.
By contraposition, if traveling along MG Road guarantees arriving before 8:00 AM, arriving after that time means the bus could not have taken MG Road.
Pointing towards a portrait, Farhan states, 'She is the only daughter of my father's mother.' How is the woman in the portrait related to Farhan?
Level 2 of 5Show the answer
Answer: Aunt
The mother of Farhan's father is his paternal grandmother. The only daughter of his paternal grandmother is his father's sister, making her Farhan's paternal aunt.
- Fill in the blank.
Starting from a courtyard gate, Kabir walks 24 metres south and then 7 metres west, placing him exactly ___ metres from the gate along a straight line.
Level 2 of 5Show the answer
Answer: 25
Applying the Pythagorean theorem to the right-angled displacement gives the hypotenuse: √(24² + 7²) = √(576 + 49) = √625 = 25 metres.
- Fill in the blank.
In a classic functional analogy, a pen is to an author as a needle is to a ___ [Clue: professional who makes or alters clothes].
Level 2 of 5Show the answer
Answer: tailor
An author uses a pen as a primary working instrument, just as a tailor uses a needle to craft garments.
Which of the following geometric figures is the odd one out?
Level 2 of 5Show the answer
Answer: Trapezium
Parallelograms, rhombuses, and rectangles each have two pairs of parallel opposite sides, whereas a trapezium has only one pair.
Which of the following Indian states is the odd one out regarding the path of the Tropic of Cancer?
Level 2 of 5Show the answer
Answer: Odisha
The Tropic of Cancer passes directly through Gujarat, Madhya Pradesh, and West Bengal, but it does not cross Odisha.
These questions come from Ado’s question bank and are written with AI help. They are never used in ranked play, so practising them here can’t change anyone’s rank.
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