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pH is a measure of acidity or alkalinity of a solution, ranging from 0 to 14.
pH stands for 'potential of Hydrogen'
It is a logarithmic scale, with 7 being neutral, below 7 acidic, and above 7 alkaline
Examples: Lemon juice has a pH of around 2, pure water is around 7, and baking soda is around 9
Acids have a pH below 7 due to the presence of excess hydrogen ions.
Acids release hydrogen ions (H+) in water, lowering the pH below 7.
The pH scale ranges from 0 to 14, with 7 being neutral, below 7 acidic, and above 7 basic.
Examples of acidic substances include lemon juice (pH 2), vinegar (pH 3), and battery acid (pH 1).
A buffer is a temporary storage area that holds data before it is processed or transferred.
Types of buffers include input buffer, output buffer, circular buffer, and FIFO buffer.
Buffers help in managing data flow between different components in a system.
Examples of buffers include keyboard buffer, printer buffer, and network buffer.
Titration is a technique used to determine the concentration of a substance in a solution by reacting it with a known concentration of another substance.
Titration involves slowly adding a solution of known concentration (titrant) to a solution of unknown concentration until the reaction reaches its endpoint.
The endpoint is usually indicated by a color change or other observable change, such as a sudden pH shift.
Common ...
Different types of titration include acid-base titration, redox titration, complexometric titration, and precipitation titration.
Acid-base titration involves the neutralization of an acid with a base or vice versa.
Redox titration involves a redox reaction between the analyte and titrant.
Complexometric titration involves the formation of a complex between the analyte and titrant.
Precipitation titration involves the form...
I applied via campus placement at College of Engineering ( Formerly Pune Instiute of Enginering and Technology ), Pune and was interviewed before Jan 2024. There was 1 interview round.
Plating and coating processes involve applying a layer of material onto a surface for various purposes.
Electroplating: uses electrical current to deposit a thin layer of metal onto a conductive object (e.g. chrome plating on car parts)
Anodizing: creates a protective oxide layer on metals through an electrolytic process (e.g. anodized aluminum for increased corrosion resistance)
Powder coating: electrostatically applies ...
Various types of defects in plating include blistering, peeling, pitting, and staining.
Blistering: formation of bubbles on the plated surface due to trapped gases or impurities
Peeling: detachment of the plated layer from the substrate
Pitting: formation of small craters or pits on the plated surface
Staining: discoloration or uneven coloring of the plated surface
I applied via Walk-in and was interviewed before May 2022. There were 3 interview rounds.
Plating processes are used to coat a surface with a thin layer of metal to improve its properties.
Electroplating - uses an electric current to deposit metal ions onto a surface
Electroless plating - uses a chemical reaction to deposit metal onto a surface
Immersion plating - involves dipping a surface into a solution containing metal ions
Vacuum plating - uses a vacuum to deposit metal onto a surface
Selective plating - de...
Chrome plating is used to improve the appearance, durability, and corrosion resistance of metal surfaces.
Chrome plating provides a shiny and reflective surface finish.
It increases the hardness and wear resistance of the metal.
Chrome plating also protects against corrosion and oxidation.
It is commonly used on automotive parts, bathroom fixtures, and tools.
Chrome plating can also be used for decorative purposes on jewelr
Top trending discussions
I was interviewed in Jan 2025.
1. Explain about framework architecture and from that all questions derived. asked to write diagram and explain the structure.
2. Difference between class variable and instance variable.
3. what is ITestListener why used and when used in framework.
4. architecture of selenium 4 (geckodriver, chromium driver)
5. what is BDD and cucumber, how both are related to.
6. which kind of framework you go, either POM or Page factory for with testNg/junit?
7. asked to write query on sql joins and how you fetch the second lowest of salary from each department.
8. DDL, DML statements.
9. pathquery and query parameters differences(API)
10. How the responses you are validating in automation framework for Json response file.
11. status code of Https
12. serialization and deserialization difference
13. String Builder, String Buffer and String difference? which is better and which is safe to use.
14. Dropdown in selenium how you handle, how to check which is already selected?
15. multiple data provider in testng and how you pass parameter and how you retrive from excel sheet? Asked to write code!
16.what is flaky testing?
17.Asked to write first code of JDBC connecting establishment with framework.
18. Code execution: input ="aabbabcbb"; output = a:3 , b:5, c:1 like this if they give name also it should count. Tip : HashMap you can write the code.
19. Code execution: a[]={1,2,3,4,0,0,0} b={5,6,7} output need to print as remove all 0's from first array and replace 1,2,3,4 with 5,6,7 some crazy questions.
20. Git cmds and CI/CD tool.
1. asked about architecture and where you used oops concepts?
2. abstract class and interfaces
3. select drop down all options
4. find scrape links from webpage write the code
5. asked for writing xpath for any element random website.
6. asked about following-sibling, descendent and preceding-sibling, normalise-space locators.
7. jdbc connection code.
8. API JSON file - how you done validation in automation testing.
I have not pursued a team lead position because I have been focused on honing my technical skills. I have experience working on projects in both waterfall and agile methodologies.
I have chosen to focus on improving my technical skills as an individual contributor rather than taking on a managerial role.
I have worked on projects using both waterfall and agile methodologies, adapting to the needs of the team and project.
...
I was interviewed in Jan 2025.
I was interviewed in Jan 2025.
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Example Question (Numerical Ability):
Question:
If 15% of a number is 45, what is 30% of that number?
Solution:
1. Find the number:
If 15% of a number is 45, then
\text{Number} = \frac{45}{0.15} = 300.
2. Calculate 30% of the number:
Now, 30% of 300 is
0.30 \times 300 = 90.
Answer:
30% of the number is 90.
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Additional Example (Simple Interest):
Question:
A bank offers a simple interest rate of 5% per annum on a deposit of Rs.20,000. What will be the interest earned in 3 years?
Solution:
1. Use the simple interest formula:
\text{Simple Interest} = \frac{P \times R \times T}{100}
= Principal amount = Rs.20,000
= Rate of interest = 5%
= Time = 3 years
2. Calculate the interest:
\text{Interest} = \frac{20000 \times 5 \times 3}{100} = 3000.
Answer:
The interest earned in 3 years is Rs. 3000.
1. Quantitative Aptitude
Q: A sum of ₹10,000 is invested at 10% per annum simple interest. What is the interest after 3 years?
A: Interest = (P × R × T) / 100 = (10,000 × 10 × 3) / 100 = ₹3,000
2. Reasoning Ability
Q: If A is the father of B, but B is not the son of A, what is B’s relation to A?
A: Daughter
3. English Language
Q: Choose the correct sentence:
a) She don’t like coffee.
b) She doesn’t like coffee.
A: b) She doesn’t like coffee.
4. General Awareness (Banking GK)
Q: What does RBI stand for?
A: Reserve Bank of India
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Example Question (Numerical Ability):
Question:
A bank offers a simple interest rate of 6% per annum. If a customer deposits Rs. 25,000 for 4 years, what is the total simple interest earned over that period?
Solution:
1. Identify the formula for Simple Interest (SI):
\text{SI} = \frac{P \times R \times T}{100}
is the principal (Rs. 25,000)
is the rate of interest (6%)
is the time period (4 years)
2. Substitute the values into the formula:
\text{SI} = \frac{25000 \times 6 \times 4}{100}
3. Calculate the interest:
\text{SI} = \frac{25000 \times 24}{100} = \frac{600000}{100} = 6000.
Answer:
The total simple interest earned over 4 years is Rs. 6,000.
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Additional Example (Logical Reasoning):
Question:
In a sequence of numbers representing daily bank transactions, the amounts follow an arithmetic progression: 105, 115, 125, ... What will be the 8th transaction amount?
Solution:
1. Identify the first term and common difference:
First term,
Common difference,
2. Use the formula for the nth term of an arithmetic progression:
a_n = a_1 + (n - 1)d
3. Substitute :
a_8 = 105 + (8 - 1) \times 10 = 105 + 70 = 175.
Answer:
The 8th transaction amount is 175.
I was interviewed in Aug 2024.
The aptitude test will be conducted online.
I was interviewed in Jan 2025.
It sounds like you might be asking for an aptitude test that has 20 questions or characters, possibly for a job application. Aptitude tests for jobs usually focus on assessing your ability to think logically, solve problems, and apply basic skills in areas like math, reasoning, and verbal abilities.
Here’s an example of 20 sample aptitude test questions, covering different types of skills:
1. Numerical Aptitude
What is 15% of 200?
If a car travels 60 miles in 1 hour, how far will it travel in 5 hours at the same speed?
Solve for x: 2x + 5 = 15.
2. Logical Reasoning
What comes next in the sequence: 2, 4, 8, 16, ___?
If all roses are flowers and some flowers are red, are all roses red?
Which number is the odd one out: 3, 5, 9, 7?
3. Verbal Ability
Find the synonym of "quick": a) slow, b) fast, c) steady, d) loud
Choose the correct sentence: "She don't like apples" or "She doesn't like apples?"
Find the antonym of "bright": a) shiny, b) dull, c) happy, d) light
4. Data Interpretation
If a graph shows sales increasing by 20% each month, how much is the increase in the 3rd month if sales were $100 initially?
The pie chart below shows the distribution of monthly expenses. If the rent is 25%, how much is the rent if the total is $1200?
5. Spatial
I was interviewed in Jan 2025.
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