Chemistry-Physical and Chemical Changes (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 30 - 33 of 44

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Question number: 30

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

The best method to separate the dyes from ink is

Choices

Choice (4) Response

a.

Filtration

b.

Sublimation

c.

Distillation

d.

Chromatography

Question number: 31

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Electron-dot structure of F2 molecule is

Choices

Choice (4) Response

a.

Electron dot structure of F2 – Choice A

Electron Dot Structure of F2 – Choice A

Explaining the electron dot structure of Fluorine

b.

Electron dot structure of F2 – Choice B

Electron Dot Structure of F2 – Choice B

Explaining the electron dot structure of Fluorine

c.

Electron dot structure of F2 – Choice C

Electron Dot Structure of F2 – Choice C

Explaining the electron dot structure of Fluorine

d.

Electron dot structure of F2 – Choice D

Electron Dot Structure of F2 – Choice D

Explaining the electron dot structure of Fluorine

Question number: 32

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Kanchan takes Cu, Fe, Zn and Al pieces separately in four test tubes labelled as I, II, III and IV respectively. She adds 10 mL of freshly prepared FeSO4 solution to each test tube and observes the color of the metal residue in each case.

Test tubes with different mixtures in it.

Test Tubes With Different Mixtures in It.

Find the color of metals which are in test tubes

She would observe a black residue in the test tubes.

Choices

Choice (4) Response

a.

I and III

b.

III and IV

c.

II and IV

d.

I and II

Question number: 33

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following statements

I. The only two non-silvery metals are Cu and Au.

II. Hot peppers get their heat from capsaicin.

III. Bee stings are alkaline while wasp stings are acidic.

Which of the above statements is/are correct?

Choices

Choice (4) Response

a.

Only III

b.

I and II

c.

Only I

d.

I and III

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