Chemistry-Structure of Atom [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 23 - 29 of 34
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Question 23
Question MCQ▾
Neutron was discovered by
Choices
Choice (4) | Response | |
---|---|---|
a. | James Chadwick | |
b. | Rutherford | |
c. | Goldstein | |
d. | J. J. Thomson |
Question 24
Question Match List-Ⅰ List-Ⅱ▾
Match the following Compound Formula
List-Ⅰ | List-Ⅱ |
(A) Rock salt | (i) Na2CO3 |
(B) Washing soda | (ii) |
(C) Alum | (iii) Codes |
(D) Baking soda | (iv) |
Choices
Choice (4) | Response | |
---|---|---|
| ||
a. |
| |
b. |
| |
c. |
| |
d. |
|
Question 25
Question MCQ▾
A well- known antiseptic ‘tincture of iodine’ is a solution made by dissolving
Choices
Choice (4) | Response | |
---|---|---|
a. | Iodine in Kl | |
b. | Iodine in alcohol | |
c. | Iodine in acetone | |
d. | Iodine in water |
Question 26
Question MCQ▾
________ is the solution of solid in a solid.
Choices
Choice (4) | Response | |
---|---|---|
a. | Beryllium | |
b. | Brass | |
c. | Bread | |
d. | Boron |
Question 27
Question MCQ▾
A compound ‘X’ has two carbon atoms having an alcoholic functional group attached to it. It is obtained by the fermentation. It is known as absolute alcohol. Identify ‘X’ .
Choices
Choice (4) | Response | |
---|---|---|
a. | Propanol | |
b. | Ethanol | |
c. | Methanol | |
d. | Butanol |
Question 28
Question MCQ▾
Dry ice used to preserve food using non-cyclic refrigeration is the solid form of
Choices
Choice (4) | Response | |
---|---|---|
a. | NO2 | |
b. | CO | |
c. | N2 | |
d. | CO2 |
Question 29
Question MCQ▾
Consider the following statements
I. Positively charged ions are known as cations.
II. Negatively charged ions are known as anions.
Which of the about statement) is/are correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | I and II | |
b. | Only II | |
c. | Only I | |
d. | Neither I nor II |