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Question : The upstream speed of a boat is 8 km/h and the downstream is 15 km/h. What is the speed of the boat in still water and the speed of the stream (in km/h), respectively?
Option 1: 11 and 3
Option 2: 3 and 11
Option 3: 11.5 and 3.5
Option 4: 3.5 and 11.5
Correct Answer: 11.5 and 3.5
Solution : Speed of downstream $(a)$ = 15 km/hr Speed of upstream $(b)$= 8km/hr Speed of the boat in still water = $\frac{a + b}{2}$ = $\frac{15+8}{2}$ = 11.5 km/hr Speed of the stream = $\frac{a-b}{2}$ = $\frac{15-8}{2}$ = 3.5 km/hr Hence, the correct answer
Question : Directions: Select the option figure that is embedded in the given figure (rotation is NOT allowed).
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of all the option figures, only the fourth option figure is embedded in the given question figure.
Hence, the fourth option is correct.
Question : The Ranganatha Temple is situated at _________.
Option 1: Kanchipuram
Option 2: Tirupati
Option 3: Chennai
Option 4: Srirangam
Correct Answer: Srirangam
Solution : The correct option is Srirangam.
The Sri Ranganathaswamy Temple, alternatively known as the Ranganatha Temple, is situated in Srirangam, which is located in Tamil Nadu This temple is devoted to Ranganatha, a form of the Hindu deity Vishnu.
Question : Evaluate the following: $5 – [96 \div 4 \ \text{of}\ 3–(16–55 \div 5)]$
Option 1: 0
Option 2: 4
Option 3: 3
Option 4: 2
Correct Answer: 2
Solution : Given: The expression is $5–[96 \div 4 \ \text{of}\ 3–(16–55 \div 5)]$ Use the BODMAS rule. $5–[96 \div 4 \ \text{of}\ 3–(16–55 \div 5)]$ = $5–[96 \div 12–(16–55 \div 5)]$ = $5–[96 \div 12–(16–11)]$ = $5–[96 \div 12–5]$ = $5–[8–5]$ = 5 – 3 =
Question : The sense of balance is achieved by:
Option 1: cerebrum equilibrium
Option 2: thalamus equilibrium
Option 3: cerebellum equilibrium
Option 4: spinal cord
Correct Answer: cerebellum equilibrium
Solution : The correct option is cerebellum equilibrium.
The cerebellum, which is situated near the base of the brain, is an essential part of the human brain because it controls balance and is responsible for motor movement. In humans, damage to this region impairs motor
Question : Directions: In the following question a word is followed by four other words, one of which cannot be formed by using the letters of the given word. Find the word. STCTRUIONMISCON
Option 1: STRICT
Option 2: CONSTRUCTION
Option 3: STATION
Option 4: MOTION
Correct Answer: STATION
Solution : Given: STCTRUIONMISCON
Let's compare all the option words with the word STCTRUIONMISCON –
First option: STRICT; All the letters of STRICT are present in the word STCTRUIONMISCON. Second option: CONSTRUCTION; All the letters of CONSTRUCTION are present in the word STCTRUIONMISCON. Third option: STATION; A
Question : An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a:
Option 1: Power transmitter
Option 2: Battery
Option 3: Uninterrupted Power Supply (UPS)
Option 4: Generator
Correct Answer: Battery
Solution : The correct option is Battery.
An electrochemical cell used as a source of direct electrical current at constant voltage under standard conditions is commonly known as a "battery". In a battery, chemical reactions within each cell generate electrical energy, and the overall voltage of
Question : What is the average of the first 29 even numbers?
Option 1: 30
Option 2: 31
Option 3: 32
Option 4: 33
Correct Answer: 30
Solution : Sum of first $n$ terms of an arithmetic progression = $\frac{n}{2}(2×\text{first term} +(n-1)× \text{common difference})$ Here, the first 29 even numbers form an AP of 29 terms with a common difference of 2 and the first term being 2. So, the sum = $\frac{29}{2}(2×2 +(29-1)×
Question : In which of the following processes nutrients or contaminants are carried away by water or moved into the lower layer of the soil?
Option 1: Ploughing
Option 2: Leaching
Option 3: Sowing
Option 4: Bleaching
Correct Answer: Leaching
Solution : The correct option is Leaching.
Leaching occurs when water moves through the soil, carrying away nutrients or contaminants and either depositing them in the lower layers of the soil or transporting them to other locations. This process is important in various environmental contexts, including
Question : The difference between Simple and Compound Interest (compounded annually) on Rs. 40,000 for 3 years at 8% per annum is:
Option 1: Rs. 684.32
Option 2: Rs. 788.48
Option 3: Rs. 784.58
Option 4: Rs. 4,000
Correct Answer: Rs. 788.48
Solution : The formula for the difference between Compound Interest(CI) and Simple Interest(SI) for 3 years is given by: $CI-SI=\frac{PR^{2}(300+R)}{100^{3}}$, where $P$ is principal and $R$ is rate of interest per annum compounded annually. ⇒ $CI-SI=\frac{40000\times8^{2}\times(300+8)}{100^{3}}$ ⇒ $CI-SI=\frac{788480000}{1000000}$ $\therefore CI-SI=788.48$ Hence, the correct answer is Rs.
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