Doubtly
@Doubtly · Joined Feb 2021
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- Write a program to accept ‘n’ integer from user into an array and display them in one each line. Answer: Read n, store the n integers in an array with one loop, then print a[i] followed by a newline in a second loop. #include <stdio.h> i... 1
- Explain the recursive function. Write a program to find the factorial of a number using recursive function. A function that calls itself is called as a recursive function and the implementation of a program that uses recursive function is called as... 1
- Write syntax of break and continue statement with example. It is sometimes desirable to skip some statements inside the loop or terminate the loop immediately without checking the test expression. In... 1
- An object of height 7 cm is kept at a distance of 25 cm in front of a concave mirror. Answer: keep the screen 37.5 cm in front of the mirror. The image is real, inverted and magnified, 10.5 cm tall. Using the Cartesian sign co... 1
- Conventions for the use of SI Units: (1) Unit of every physical quantity should be represented by its symbol. (2) Full name of a unit always starts with smaller letter even if t... 1
- System of Units , types and examples (i) CGS: Centimetre Gram Second system (ii) MKS: Metre Kilogram Second system (iii) FPS: Foot Pound Second system. (iv) SI: System Internati... 1
- WAP to find greatest of three number using conditional operator #include<stdio.h> void main() int i,j,k; printf("Enter three no.n"); scanf("%d%d%d",&i,&j,&k); int re=(i>j)?((i>k)?i:k):((j>k)?j:k); printf(... 1
- Describe the phenomena of Fluorescence and Phosphorescence. Fluorescence and phosphorescence are both optical phenomena involving the emission of light by certain substances when they absorb energy fr... 1
- Give the advantages of spectroscopic techniques Identification and characterization of substances. Accurate quantitative analysis. Non-destructive analysis. Versatility across different sa... 1
- Name the different types of molecular spectroscopy. Explain NMR spectroscopy Infrared (IR) Spectroscopy: This technique analyzes the absorption and transmission of infrared radiation to study molecular vibrations and... 1
- Write a note on electromagnetic spectrum Answer: the electromagnetic spectrum is the complete range of electromagnetic radiation arranged in order of wavelength (or frequency), from... 1
- Give the different types of electrochemical cell .Explain any 2 Answer: electrochemical cells are of two main types: (1) galvanic (voltaic) cells, which convert chemical energy into electrical energy, and... 1
- Write a note on calomel electrode Answer: the calomel electrode is a secondary reference electrode made of mercury in contact with mercurous chloride (calomel, Hg₂Cl₂ ) and a... 1
- Define standard electrode potential Answer: the standard electrode potential ( E^° ) of an electrode is its potential measured relative to the standard hydrogen electrode (SHE,... 1
- Give the comparison between galvanizing and tinning Galvanizing Tinning Processof covering iron or steel,with a thin coat of ZINC to,prevent it from rusting. Process of coating steel with a,th... 1
- What is Cathodic protection? Explain impressed current method with diagram The principle involved in this method is to force the metal to be protected to behave like a cathode, thereby corrosion does not occur. Ther... 1
- Write short notes on Pitting corrosion b) stress corrosion c) Conc.cell d) Intergranular e) Galvanic cell. a) Pitting corrosion Pits are holes or cavities that are developed on the metal surface when the protective oxide film breaks. Around such p... 1
- Define Corrosion. Explain mechanism of corrosion by oxygen absorption mechanism Destruction or deterioration or disintegration of a metal by chemical or electrochemical reaction with its environment is called corrosion.... 1