JEE Main Chemistry numerical 251: If the roots of z²−40z+391=0 are r and s, enter r+s.
Correct Answer: 40
Explanation:
Vieta gives r+s=40.
MCQ Collection
jee-main-paper-1 MCQs
Practice jee-main-paper-1 questions with answers and explanations.
JEE Main Chemistry numerical 244: A sequence starts at 32 and each term is three times the preceding term. Enter the second term.
Correct Answer: 96
Explanation:
96
JEE Main Chemistry numerical 245: Evaluate 17(4+1).
Correct Answer: 85
Explanation:
17×5=85.
JEE Main Chemistry numerical 242: Enter the positive value of |14²−6|.
Correct Answer: 190
Explanation:
190
JEE Main Chemistry numerical 243: Enter the area of a triangle with base 15 and height 11.
Correct Answer: 82.5
Explanation:
Area=½×15×11=82.5.
JEE Main Physics numerical 229: A sequence starts at 33 and each term is three times the preceding term. Enter the second term.
Correct Answer: 99
Explanation:
99
JEE Main Physics numerical 230: Evaluate 2(14+1).
Correct Answer: 30
Explanation:
2×15=30.
JEE Main Physics numerical 231: If the roots of z²−22z+57=0 are r and s, enter r+s.
Correct Answer: 22
Explanation:
Vieta gives r+s=22.
JEE Main Physics numerical 232: Enter the positive value of |4²−7|.
Correct Answer: 9
Explanation:
9
JEE Main Physics numerical 233: Enter the area of a triangle with base 5 and height 12.
Correct Answer: 30
Explanation:
Area=½×5×12=30.0.
JEE Main Physics numerical 234: A sequence starts at 23 and each term is three times the preceding term. Enter the second term.
Correct Answer: 69
Explanation:
69
JEE Main Physics numerical 235: Evaluate 7(5+1).
Correct Answer: 42
Explanation:
7×6=42.