The destruction of tsunami is measured by its:
- (A) Height
- (B) Momentum
- (C) Intensity
- (D) Predictability
Check Answer Explanation
The damage caused by a tsunami is closely related to the height to which the tsunami wave attains, particularly the run-up height, which is defined as the maximum vertical height reached by the water surface relative to normal sea level when the tsunami waves approach the shore. This is the run-up height that will determine how far the flood will travel inland and how destructive the damage will be.
Scientists consider several characteristics of a tsunami, including the energy, speed, wavelength, and run-up height of the waves. However, the run-up height of the waves is the most important one when considering the destructive potential of the tsunami when it reaches the shore.
Brass gets discoloured in air because of the presence of which of the following gases in air?
- (A) Carbon dioxide
- (B) Oxygen
- (C) Hydrogen Sulphide
- (D) Nitrogen
Check Answer Explanation
At its core, brass is an alloy formed by the combination of copper and zinc. When it is exposed to air containing small amounts of hydrogen sulphide (H₂S), the chemical reaction acts specifically on the copper in the alloy, resulting in the formation of copper sulfide, CuS, which is dark brown to black in color and settles on the surface, causing the brass to lose its characteristic yellow-gold luster and giving it an unattractive, stained, or tarnished appearance.
“Mehr-e-do-Neem” is the poetry collection of:
- (A) Iftakhar Arif
- (B) Ahmad Sibhai
- (C) Nighat Hashmi
- (D) Qateel Shifai
Check Answer Explanation
The poetry collection “Mehr-e-Do Neem” (مہرِ دو نیم) is written by the renowned poet Iftikhar Arif.
Which of the following state was acceded to Pakistan on 15th August 1947?
- (A) Jodhpur
- (B) Junagarh
- (C) Swat
- (D) Hyderabad
Check Answer Explanation
The Nawab of Junagarh, Muhammad Mahabat Khanji III, formally signed the Instrument of Accession to the Dominion of Pakistan on August 15, 1947. The Junagarh kingdom, being a Hindu-majority kingdom located in a corner of the Kathiawar peninsula (which is now a part of Gujarat), had no direct land boundary with Pakistan. The Nawab claimed that it had access to Pakistan by sea. The claim was accepted by Pakistan on September 15, 1947.
Which of the following institution was established in 1864?
- (A) The University Oriental College
- (B) Sindh Madrassah-tul-Islam
- (C) Ghazi University
- (D) Government College Lahore
Check Answer
- (D) Government College Lahore
Explanation
Government College Lahore, now known as the Government College University (GCU), was established on January 1, 1864. The college was established during the British era, and its first principal was Dr. Gottlieb Wilhelm Leitner. Initially, it was affiliated with Calcutta University, but over time it developed into a major academic institution in the region and was elevated to university status in 2002.
The University Oriental College: While founded in the 1860s (specifically 1870) to promote local languages, it was not the institution established in 1864.
Sindh Madrassah-tul-Islam: This institution was founded by Khan Bahadur Hassanally Effendi on September 1, 1885.
Ghazi University: This is a modern institution established in 2012 in Dera Ghazi Khan.
The Sustainable Development Goals (SDGs) were set in 2015 by the:
- (A) International Monetary Fund
- (B) United Nations
- (C) UNESCO
- (D) World Bank
Check Answer Explanation
The Sustainable Development Goals (SDGs) have been created via the United Nations, making choice (B) United Nations the right option. The SDGs were hooked up as part of the 2030 Agenda for Sustainable Development, which became followed by means of all United Nations Member States in September 2015.
The protein factory in the human cell is:
- (A) Ribosome
- (B) Nucleus
- (C) Cytoplasm
- (D) Golgi apparatus
Check Answer Explanation
- Ribosomes are the protein factories of a cell; they are where proteins are made.
- Nucleus controls everything that goes on in a cell; it also contains the genetic information.
- Cytoplasm is a fluid substance that contains the organelles.
- Golgi apparatus is a structure that processes proteins but does not produce them.
Three containers have their volumes in the ratio 3 : 4 : 5. They are full of milk and water. The mixture contains milk and water in the ratio of (4 : 1), (3 : 1) and (5 : 2) respectively. The ratio of milk and water in the fourth container contains all the above three mixtures is:
- (A) 4 : 1
- (B) 151 : 48
- (C) 157 : 53
- (D) 5 : 2
Check Answer Explanation
Solution: The volumes of the milk and the water in the three containers are in the ratio 3:4:5. The milk and the water in the three containers are in the ratio 4:1, 3:1, and 5:2 respectively.
Step 1 – calculate the milk fraction in the containers:
Container 1: milk fraction is 4/5, milk in the container = 3 × 4/5 = 12/5.
Container 2: milk fraction is 3/4, milk in the container = 4 × 3/4 = 3.
Container 3: milk fraction is 5/7, milk in the container = 5 × 5/7 = 25/7.
Step 2 – calculate the fraction of the water in the containers:
Container 1: fraction of the water = 1 – 4/5 = 1/5, water in the container = 3 × 1/5 = 3/5.
Container 2: fraction of the water = 1 – 3/4 = 1/4, water in the container = 4 × 1/4 = 1.
Container 3: fraction of the water = 1 – 5/7 = 2/7, water in the container = 5 × 2/7 = 10/7.
Step 3 – calculate the total milk and the total water in the containers:
Total milk = 12/5 + 3 + 25/7 = 314/35.
Total water = 3/5 + 1 + 10/7 = 106/35.
Step 4 – calculate the final ratio:
Milk : Water = 314 : 106 = 157 : 53.Answer: (C) 157 : 53
The foreign phrase “Coup d’etat” means:
- (A) Attack on a country
- (B) Change of government by force
- (C) Without care
- (D) Formation of a new government
Check Answer
- (B) Change of government by force
Explanation
A coup d’état, which literally means “stroke of the state” in French, is an attempt for power by a small number of individuals, often military men or politicians, in a swift, brutal, and illegal manner. It differs from a revolution, as its main purpose is to overthrow the government, as opposed to the more general uprising associated with a revolution..
The Man and Biosphere Programme (MAB) was launched by UNESCO in:
- (A) 1971
- (B) 1972
- (C) 1986
- (D) 1991
Check Answer Explanation
The Man and Biosphere Reserve Programme was first conceived by UNESCO in 1971. It’s an intergovernmental scientific undertaking whose main goal is to enhance how people interact with their environment.
