The question asks for the chemical name of Vitamin-A. This requires knowledge of the common names and their corresponding chemical names for various vitamins.
Vitamin-A is a fat-soluble vitamin that plays a crucial role in vision, immune function, and cell growth. Its chemical name is Retinol.
Correct Option: B) Retinol
The question asks to identify the incorrectly matched pair among the given options, which link famous personalities with their respective fields or instruments.
Correct Option: B) M.F. Husain - Tabla
The question asks to identify the odd one out from a given group of activities. To do this, we need to find a common characteristic shared by most of the options and then identify the option that does not share that characteristic.
C) Driving is the odd one out because it is an activity performed on land, whereas swimming, diving, and boating are all activities associated with water.
The problem asks us to identify the odd one out from a given group of units. To do this, we need to understand what each unit measures and then find the unit that measures a different physical quantity compared to the others.
Correct Option: A) Gallon is a unit of volume, whereas Ton, Quintal, and Kilogram are all units of mass.
To determine which word cannot be formed from "EDUCATIONAL", we need to check if all the letters required for each option are present in the original word and if their frequencies are sufficient.
Correct Option: A) NATIONAL
The word "NATIONAL" requires two 'N's, but the word "EDUCATIONAL" only contains one 'N'. Hence, "NATIONAL" cannot be formed.
The problem asks us to unscramble a given set of letters to form the name of a fruit and then identify the letter that appears in the middle of the unscrambled word.
Correct Option: B) A
To solve this problem, we need to identify all possible permutations of the given letters AER and then check which of these permutations form meaningful English words. Each letter must be used exactly once in each word.
Correct Option: D) Three
The three meaningful English words that can be formed using the letters A, E, R exactly once are ARE, EAR, and ERA.
This question tests basic knowledge about the calendar, specifically the number of days in the month of February. The key concept here is understanding the difference between a common year and a leap year.
Correct Option: A) 28 or 29 days
This option correctly accounts for both common years (28 days) and leap years (29 days) for the month of February.
This is a coding-decoding problem. We need to identify the pattern or rule used to code 'APE' as '369' and then apply the same rule to code 'PEA'. The most common approach in such problems is to assign a unique code to each letter.
Correct Option: B) 693
Find the missing number in the series?
4, 10, 22, ?, 94
The question asks us to find the missing number in the series 4, 10, 22, ?, 94. To solve this, we need to identify the mathematical relationship between consecutive terms. The pattern involves multiplying the previous term by 2 and adding 2.
Identify the given number series:
4, 10, 22, ?, 94
We need to determine the missing fourth term by identifying the pattern followed by the other terms.
Examine the relationship between the first two terms:
The first term is 4, and the second term is 10.
\[ 4\times2+2=10 \]Therefore, the second term is obtained by multiplying the first term by 2 and adding 2.
Examine the relationship between the second and third terms:
The second term is 10, and the third term is 22.
\[ 10\times2+2=22 \]The same mathematical pattern is followed.
Calculate the missing fourth term:
Apply the same pattern to the third term, 22.
\[ 22\times2+2 \] \[ =44+2 \] \[ =\boxed{46} \]Therefore, the missing number is 46.
Complete the number series:
Using the identified pattern, the complete series is:
4, 10, 22, 46, 94
The mathematical rule is:
\[ a_{n+1}=2a_n+2 \]Therefore, the missing number in the series is 46.
Correct Option: A) 46 — Each term in the series is obtained by multiplying the previous term by 2 and adding 2. Applying this rule to 22 gives 46. Hence, Option A is the correct answer.
B) 40: This is incorrect because the established pattern requires multiplying 22 by 2 and adding 2, which gives 46, not 40. Therefore, 40 does not follow the series.
C) 56: This is incorrect because applying the rule to 22 gives 46. The number 56 cannot be obtained using the established pattern.
D) 66: This is incorrect because the fourth term must be 46 according to the multiplication-and-addition pattern. The number 66 does not satisfy the required relationship.