Bissoy.com
Doctors Medicines MCQs Q&A

In the electromotive series, the metal with more negative oxidation potential displaces the metal with more positive potential.

In the electromotive series, the metal with more negative oxidation potential displaces the metal with more positive potential. Correct Answer False

The given statement is incorrect. In the electromotive series, the metal with more positive oxidation potential will pass through the solution and displace the metal with less positive potential. This basic mechanism of electrochemistry is used to predict the process of cementation.

Related Questions

Following observations are noted regarding four metals P, Q, R and S. Q displaces P and S from their respective salt solutions P displaces S and R from their respective salt solutions S displaces only R from its salt solution Which is the second most reactive metal?
Metal 'A' displaces metal 'B' from its salt solution, but not able to displace metal 'C' from its salt solution. Metal 'B' displaces metal 'D' from its salt solution. Which of the following depicts correct order of reactivity of metals. 
Which of the following statements is correct regarding the oxidation number of Oxygen? I. The oxidation number of Oxygen in most compounds is -2. II. When Oxygen is bonded to Fluorine in compounds like Oxygen difluoride and Dioxygen diflouride, the Oxygen is assigned an oxidation number of +2 and +2 respectively. III. In peroxide, an Oxygen atom is assigned an oxidation number of -1 and in Superoxide, each oxygen atom is assigned an oxidation number of -1/2.
Below are given two sets, Set - I which gives modalities of operant conditioning and Set - II which provides the types of reinforcement, the types of responses (responses made or withheld) and the presence or absence of cue. Match the two sets and indicate your answer by choosing from the code : Set - I (Modalities of operant conditioning procedures) Set – II           (Conditions and contexts) (a) Reward training (i) Positive reinforcement, response made, with cue present (b) Escape training (ii) Positive reinforcement, response withheld with cue absent (c) Discriminated omission training   (iii) Positive reinforcement, response made with cue absent (d) Active avoidance   (iv) Negative reinforcement, response made with training (e) Punishment training (v) Positive reinforcement, response withheld with cue present   (vi) Negative reinforcement, response withheld with cue absent  
Consider the given statement and decide which of the given assumption/s is/are implicit. Statement: Serials/soaps are a reason for developing negative tendencies in women. Assumptions: I: Newspapers highlight the negative aspects first and then, the positive aspects. II: The attention given to the negative aspects is much higher than that given to the positive aspects.
Consider the given statement and which of the given assumptions is (are) implicit.
Statement:
The serials/soaps are a reason for developing negative tendencies in women. Assumptions :
1. Newspapers highlight the negative aspects first than the positive aspects.
2. The attention for negative aspects is much higher than positive aspects
If x - y = 8, then which of the following must be true?  1. Both x and y must be positive for any value of x and y. 2. If x is positive, y must be negative for any value of x and y. 3. If x is negative, y must be positive for any value of x and y.  Select the correct answer using the code given below. 
If x - y = 8, then which of the following must be true ?
I. Both x and y are positive.
II. If x is positive, y must be positive.
III. If x is negative, y must be negative.
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/ passage and find out which of the four combinations is correct. 1. It is widely known that the use of social media affects mental health, but a new, three-year study has found that it is the lack of sleep from its use and the psychological distress caused by cyberbullying via the platforms that are the main reasons affecting one’s state of mind, more than use of the actual apps. P. Girls who were checking social media also reported to be less happy and more anxious; however, boys didn’t report the same feelings. Q. In girls, the researchers said, the negative effects were due to disrupted sleep, cyberbullying and to some extent, lack of exercise. R. Researchers found that girls and boys who checked social media sites more than thrice a day had poorer mental health and greater psychological distress. S. In boys, the same three factors — disrupted sleep, cyberbullying, lack of exercise — had an effect too, but it was much smaller. 6. Dr Dasha Nicholls, from Imperial College London, who was also involved in the study added, “It’s not the amount of social media, per se, it’s when it displaces real-life contact and activities. It’s about getting a balance.”
A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is