Question Discussion & Solution

The correct answer is Tinder.

• Tinder
  • Tinder is an American geosocial networking app.
  • It allows users to swipe to like or dislike other profiles based on their photos and common interests. 

​Additional Information

• Microsoft Edge
  • Microsoft Edge is a cross-platform web browser developed by Microsoft.
  • It was first released for Windows 10 and Xbox One in 2015.
  • Then for Android and iOS in 2017, for macOS in 2019, and as a preview for Linux in October 2020.
  • Edge includes integration with Cortana and has extensions hosted on the Microsoft Store.
• Mozilla Firefox
  • Mozilla Firefox, or simply Firefox, is a free and open-source web browser.
  • It was developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation.
• Internet Explorer 
  • ​Internet Explorer is a series of graphical web browsers developed by Microsoft and is included in the Microsoft Windows line of operating systems, starting in 1995.
  • It was first released as part of the add-on package Plus.

Key Points

 An array is defined as the collection of similar types of data items stored at contiguous memory locations. Arrays are the derived data type in C programming language which can store the primitive type of data such as int, char, double, float, etc. C array is beneficial if you have to store similar elements.

int array[] = {2, 3, 4, 5}; This array storage be like, 

The above array at index I can be accessed by, a[i], i[a], *(a+i) or *(i+a) all the above representations all are equal and gives the i th index value.

printf(%d', 2[array]); So, it gives the 2^nd  index value. i.e 4.

Hence the correct answer is 4.

Additional InformationProgram: 

#include
int main()
{
    int arr[] = { 2, 3, 4, 5 };
    printf("%d ",arr[2]);
    printf("%d ",2[arr]);
    printf("%d ",*(2+arr));
    printf("%d ",*(arr+2));
    return 0;
}

Output: 4 4 4 4

So above given 2^nd index value is 4 for all above print statements.

The correct option is, i.e. Brain.

• Hypothalamus-
  • The Hypothalamus is a part of Brain that plays a crucial role in many important functions of the Human Body.
  • The hypothalamus is located below the thalamus in the brain.
  • The hormones from the hypothalamus govern physiological functions such as temperature regulation, thirst, hunger, sleep, mood, and the release of other hormones within the body.
  • Hypothalamus regulates the pituitary gland.

Today most countries in the world have a Constitution. While all democratic countries are likely to have a Constitution, it is not necessary that all countries that have a Constitution are democratic.

Important Points

Key features of the Indian Constitution:

• Federalism:
  • This refers to the existence of more than one level of government in the country.
  • In India, we have governments at the state level, at the centre and Panchayati Raj at the village level.
  • The Constitution contains lists that detail the issues that each tier of government can make laws on.
  • In addition, the Constitution also specifies where each tier of government can get the money from, for the work that it does.
  • All persons in India are governed by laws and policies made by each of these levels of government.
• Parliamentary form of government:
  • The people of India have a direct role in electing their representatives. Also, every citizen of the country, irrespective of his/her social background, can contest in elections.
• Separation of powers:
  • There are 3 organs of government:
    • The legislature: refers to elected representatives by the people.
    • The executive: is a smaller group of people who are responsible for implementing laws and running the government.
    • The judiciary: refers to the system of courts in India.
  • Each organ mentioned above acts as a check on the other organs of government. This ensures the balance of power between all three.
• Fundamental rights:
  • The constitution guarantees the rights of individuals against the State as well as against other individuals. It also guarantees the rights of minorities against the majority.
  • The Fundamental Rights in the Indian Constitution include:
    • Right to Equality
    • Right to Freedom
    • Right against Exploitation
    • Right to Freedom of Religion
    • Cultural and Educational Rights
    • Right to Constitutional Remedies

From the above, we can conclude that the Presidential form of government is not a feature of the Indian constitution.

The correct answer is Ethyl mercaptan.

Key Points

• The stench due to leakage from the LPG cylinder because of Ethyl mercaptan.
  • LPG gas is basically propane and butane.
  • It is odourless in its natural state.
  • The smell that you notice when there is a leak is actually the stench of an entirely different agent, called ethyl mercaptan​.
    • This substance is added to the gas when it leaves the main storage terminals.
• Hence, option 4 is correct.

Additional Information

• Methane :
  • Methane is a chemical compound with the chemical formula CH₄.
  • Methane is a one-carbon compound in which the carbon is attached by single bonds to four hydrogen atoms
  • It is a group-14 hydride and the simplest alkane and is the main constituent of natural gas.
  • It is a colourless, odourless, non-toxic but flammable gas.
  • It has a role as a fossil fuel, a member of greenhouse gas, and a bacterial metabolite.
• Butane :
  • Butane or n-butane is an alkane with the formula C₄H₁₀.
  • Butane is a gas at room temperature and atmospheric pressure.
  • Butane is a highly flammable, colourless, easily liquefied gas that quickly vaporizes at room temperature.
  • Butane is a hydrocarbon and a highly flammable, colourless, odourless, easily liquefied gas.
  • It is typically used as fuel for cigarette lighters and portable stoves, a propellant in aerosols, a heating fuel, a refrigerant.
• Propane :
  • Propane is a three-carbon alkane with the molecular formula C₃H₈.
  • It is a gas at standard temperature and pressure, but compressible to a transportable liquid. 
  • Propane is a flammable hydrocarbon gas that is liquefied through pressurization and commonly used for fuel in heating, cooling, hot water, and vehicles.
  • Propane can also be used for refrigerants, aerosol propellants, and petrochemical feedstock.​