NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1237 - 1240 of 1259

Access detailed explanations (illustrated with images and videos) to 1259 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 500.00 or

How to register?

Question number: 1237

» Redox Reactions & Electrochemistry » Redox Reactions

Edit
MCQ▾

Question

The standard reduction potentials at for the following half reactions are given against each

Which is the strongest reducing agent?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1238

» Redox Reactions & Electrochemistry » Electrochemical Cells

Edit
MCQ▾

Question

Which of the following statements are true for the electrochemical Daniel cell?

(1) Electrons flow from copper electrode to zinc electrode

(2) Current flows from zinc electrode to copper electrode

(3) Cations move toward copper electrode which is cathode

(4) Cations move toward zinc electrode

Choices

Choice (4)Response

a.

1 and 3

b.

2 and 4

c.

2 and 3

d.

1 and 2

Question number: 1239

» Redox Reactions & Electrochemistry » Electronic Concepts of Oxidation and Reduction

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

A negative value of standard reduction potential means that reduction take place on this electrode with reference to standard hydrogen electrode.

Reason (Ꭱ)

The standard electrode potential of a half cell has a fixed value.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

Passage

Tollen’s reagent is used for detection of aldehyde. When is added in Glucose with solution. Then gluconic acid is formed.

Given,

Question number: 1240 (1 of 3 Based on Passage) Show Passage

» Redox Reactions & Electrochemistry » Nernst Equation and Its Applications

Edit
MCQ▾

Question

is used in this reaction rather than any other base. Select the correct statement out of the following

Choices

Choice (4)Response

a.

changes the standard reduction potential of

b.

To dissolve the insoluble silver oxide formed under the reaction conditions

c.

is a weaker oxidizing agent than

d.

Ag precipitates gluconic acid as its silver salt

Developed by: