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Consider the following statements with reference to the periodic table of chemical elements.<br>1. Ionization potential gradually decreases along a period.<br>2. In a group of elements, electron affinity decreases as the atomic weight increases.<br>3. In a given period, electronegativity decreases as the atomic number increases.<br>Which of these statement(s) is/are correct?
A
Only 1
B
Only 2
C
Only 1 and 3
D
Only 2 and 3
Correct Answer:
Only 2
Consider the following statements with reference to the Periodic Table of chemical element
1. Ionisation potential gradually decreases along a period.
2. In a group of element, electron affinity decreases as the atomic weight increases.
3. In a given period, electronegativity decrease as the atomic number increases.
Which of these statement(s) is/are correct?
A
Only 1
B
Only 2
C
1 and 3
D
2 and 3
Which of the following statements is/are false regarding modern periodic table?
1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.
2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.
3. In the modern periodic table, isotopes are placed in adjacent groups.
4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.
A
only 1
B
only 4
C
1, 2 and 4
D
1, 2 and 3
What is the condition for a tree to be weight balanced. where a is factor and n is a node? >= a*weight and weight >= a*weight. b) weight >= a*weight and weight >= a*weight. c) weight >= a*weight and weight >= a*weight. d) weight is a non zero
A
weight >= a*weight and weight >= a*weight.
B
n.left
C
n.left
D
n.left
Assertion(A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason(R): In a group, the atomic radii generally increase from top to bottom.
A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C
(A) is true, but (R) is false
D
(A) is false, but (R) is true
Weight of Arun is 4/7 of the weight of Bablu. Weight of Bablu is 1/2 of the weight of Ram. Weight of Ram is 4 times of the weight of Deep. Weight of Deepis 1/9 of the weight of Ankit. Whose weight is more than the weight of Deep but less than the weight of Bablu?
A
Ankit
B
Arun
C
Ram
D
Deep
Weight of Alok is twice the weight of Karan. Weight of Karan is one-fourth of the weight of Roma. Weight of Roma is twice of the weight of Tipu. Weight of Tipu is twice of the weight of Shivam. The weight of Roma is greater than the weight of how many persons among Alok, Karan, Shivam and Tipu?
A
3
B
4
C
0
D
2
Weight of L is one-fourth of the weight of V. Weight of V is twice of the weight of B. Weight of B is half of the weight of C. Weight of C is thrice of the weight of H. The weight of V is greater than the weight of how many persons among L, B, H and C?
A
3 \
B
2
C
1
D
0
When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?
A
T
B
U
C
V
D
Z
Weight of C is twice the weight of M. Weight of M is 1/9 of the weight of R. Weight of R is 5/2 of the weight of K. Weight of K is 1/3 of the weight of G. Who is the second lightest?
A
C
B
M
C
K
D
G
In a family, Virendra's weight is more than Parminder's weight. Parminder's weight is less than Kuldeep's weight but more than Gurjeet's weight. The sum ofKuldeep's weight and Tommy's weight is equal to the weight of Virendra. Who is the heaviest in the family?
A
Virendra
B
Kuldeep
C
Gurjeet
D
Parminder