NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension: Questions 585 - 589 of 1058

Access detailed explanations (illustrated with images and videos) to 1058 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access & Unlimited Time!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

Question 585

Edit

Question

MCQ▾

Which of the following will have equal number of electrons?

Choices

Choice (4)Response

a.

Ar and Ne

b.

Cl and Br

c.

Mg 2+ and Ca 2+

d.

Na + and Mg 2+

Question 586

Edit

Appeared in Year: 2013

Question

MCQ▾

The speed-time relation of a car whose weight is 1500 kg has shown in the given graph. How much braking force has been applied at the end of 7sec. to stop the car in 2 sec?

Graph of Speed vs. Time

Graph of Speed vs. Time

Loading Image

Choices

Choice (4)Response

a.

2000N

b.

9000N

c.

4800N

d.

1200N

Question 587

Edit

Question

MCQ▾

Mg has three natural isotopes whose isotopic masses and relative abundances are respectively 23.98 (78.60%), 24.98 (10.11%) and 25.98 (11.29%). The atomic mass of Mg will be

Choices

Choice (4)Response

a.

24.31

b.

24.95

c.

23.95

d.

23.42

Question 588

Edit

Question

MCQ▾

The electronic configuration of an ion M 2+ is 2,8 and 14. If its mass is 56, the number of neutrons in its nucleus is

Choices

Choice (4)Response

a.

32

b.

30

c.

34

d.

42

Question 589

Edit

Appeared in Year: 2013

Question

MCQ▾

The speeds of sound in air and sea-water are given to be 340 m/s and 1440 m/s, respectively. A ship sends a strong signal straight down and detects its echo after 1.5 s. The depth of the sea at that point is

Choices

Choice (4)Response

a.

2.16 km

b.

1.08 km

c.

0.255 km

d.

0.51 km