MCQs

Explanation
The Exit Control Lists is a system of border control maintained by the Government of Pakistan under Exit from Pakistan (Control) Ordinance, 21 Dec 1981 ECL stands for Exit Control List Headquarters : Pak Secretariat Islamabad, Capital Territory Parent agency: Ministry of Interior (Pakistan) and  Federal Investigation Agency ND31-8-2023

Explanation
Sh5-9-2023 1069.31x900.979 (Original: 1080x91

Explanation
The average age of six girls is  126 months .  =(120+124+123+130+130+129+130)/7 =(886)/7 =126 Sh5-9-2023

Explanation
perimeter of square=4×side =4×2.5 =10cm SH5-9-2023

Explanation
A triangle is called a right-angled triangle when it has an angle equal to 90 degrees. Otherwise, it will not be a right-angled triangle. **** all  four sides  are of equal length ( equilateral ), and all f our angle s are right angles.  A triangle that has  no equal sides  and  no equal angles  is  known  as  a Scalene Triangle while  if  two sides o f a triangle are of  equal length , then it is  called .  Isosceles triangle Sh5-9-2023

Explanation
0.2 × 0.02 = 0.004

Explanation
The cell is the smallest unit of life . Cells are called ‘ structural ’ and ‘ functional ’ units for a reason. Cells are made of molecules which are in turn made up of atoms . “ Cell is the unit of LIFE ” is that a cell is the smallest living entity in a living system.

Explanation
The backbone of DNA consists of alternating deoxyribose sugar and phosphate groups , linked by phosphodiester bonds. Key Information : Sugar-Phosphate Backbone : Provides structural stability to the DNA double helix. Directionality: 5’ (phosphate) to 3’ (sugar) orientation. Nitrogenous Bases (A, T, C, G) : Attached to the sugar but not part of the backbone. Form hydrogen bonds to create base pairs (A-T, C-G).

Explanation
Nucleic acids (DNA/RNA) are present in: Nucleus : Contains genomic DNA (eukaryotic cells). Mitochondria : Have their own mtDNA (vital for energy production). Chloroplasts (in plants/algae): Contain cpDNA for photosynthesis-related functions.

Explanation
The modern periodic table is arranged by increasing atomic number (number of protons). This arrangement resolves inconsistencies in earlier tables and groups elements with similar properties together.

Explanation
ATP (Adenosine Triphosphate) is called the energy currency of the cell because it stores and provides energy for cellular activities. It releases energy when converted to ADP (Adenosine Diphosphate), which is then recycled back into ATP through cellular respiration.

Explanation
Boyle’s Law describes the inverse relationship between the pressure (P) and volume (V) of a given mass of gas at constant temperature (isothermal conditions): P ∝ 1/V or PV = constant Key Points : Conditions : Fixed mass and temperature (no chemical reactions). Example : Compressing a syringe (volume ↓ → pressure ↑).

Explanation
The increase in length (or volume) of solids when heated is specifically called thermal expansion . Key Information : Thermal Expansion : Occurs due to increased atomic vibrations with temperature. Linear expansion : Change in length (e.g., railroad tracks expanding in summer). Volumetric expansion : Change in 3D dimensions (e.g., mercury in thermometers).

Explanation
Methane is the simplest of saturated hydrocarbons with a chemical formula CH4. It consists of four hydrogen atoms and one carbon atom. It is the simplest alkane .

Explanation
Cholesterol is a vital precursor in the biosynthesis of: Vitamin D : Cholesterol converts to 7-dehydrocholesterol in the skin, which forms vitamin D₃ under UV light. Steroid Hormones : Cholesterol is the backbone for : Sex hormones (testosterone, estrogen, progesterone). Adrenal hormones (cortisol, aldosterone).

Explanation
0.2 × 0.02 = 0.004

Explanation
The cell is the smallest unit of life . Cells are called ‘ structural ’ and ‘ functional ’ units for a reason. Cells are made of molecules which are in turn made up of atoms . “ Cell is the unit of LIFE ” is that a cell is the smallest living entity in a living system.

Explanation
The backbone of DNA consists of alternating deoxyribose sugar and phosphate groups , linked by phosphodiester bonds. Key Information : Sugar-Phosphate Backbone : Provides structural stability to the DNA double helix. Directionality: 5’ (phosphate) to 3’ (sugar) orientation. Nitrogenous Bases (A, T, C, G) : Attached to the sugar but not part of the backbone. Form hydrogen bonds to create base pairs (A-T, C-G).

Explanation
Nucleic acids (DNA/RNA) are present in: Nucleus : Contains genomic DNA (eukaryotic cells). Mitochondria : Have their own mtDNA (vital for energy production). Chloroplasts (in plants/algae): Contain cpDNA for photosynthesis-related functions.

Explanation
The modern periodic table is arranged by increasing atomic number (number of protons). This arrangement resolves inconsistencies in earlier tables and groups elements with similar properties together.

Explanation
ATP (Adenosine Triphosphate) is called the energy currency of the cell because it stores and provides energy for cellular activities. It releases energy when converted to ADP (Adenosine Diphosphate), which is then recycled back into ATP through cellular respiration.

Explanation
Boyle’s Law describes the inverse relationship between the pressure (P) and volume (V) of a given mass of gas at constant temperature (isothermal conditions): P ∝ 1/V or PV = constant Key Points : Conditions : Fixed mass and temperature (no chemical reactions). Example : Compressing a syringe (volume ↓ → pressure ↑).

Explanation
The increase in length (or volume) of solids when heated is specifically called thermal expansion . Key Information : Thermal Expansion : Occurs due to increased atomic vibrations with temperature. Linear expansion : Change in length (e.g., railroad tracks expanding in summer). Volumetric expansion : Change in 3D dimensions (e.g., mercury in thermometers).

Explanation
Methane is the simplest of saturated hydrocarbons with a chemical formula CH4. It consists of four hydrogen atoms and one carbon atom. It is the simplest alkane .

Explanation
Cholesterol is a vital precursor in the biosynthesis of: Vitamin D : Cholesterol converts to 7-dehydrocholesterol in the skin, which forms vitamin D₃ under UV light. Steroid Hormones : Cholesterol is the backbone for : Sex hormones (testosterone, estrogen, progesterone). Adrenal hormones (cortisol, aldosterone).

Explanation
The largest river in Pakistan is the Indus River. It is the  National  River of  Pakistan The Indus River  starts  in  Tibet It originates  from the  Mansarovar lake They flow through  India, Pakistan, It finally falls into the  Arabian Sea near Karachi. They start making a  delta  near the city of  Thatta The  old name  of the Indus River was  Sindhu There 6  Barrages  constructed in the  Indus River The Length of  the  Indus River is   3,180 km The  2nd source of    Indus River is  Gar Tsangpo The upper Indus Plain  starts  from Kalabagh The upper Indus Plain  ends  at Mithankot   Additional information: The second longest river of Pakistan is  Sutlej river.

Explanation
Justice Yahya Afridi is the current &  30th Chief Justice CJ of Pakistan since October 2024 Born on 23 January 196 5 in Kohat Appointed as an Additional Judge of the Peshawar High Court in 2010 . He also took the oath as Chief Justice of the Peshawar High Court in 2016 . He became the judge in Supreme Court of Pakistan in 2018 He replaced Qazi Faez Essa He will serve as CJP until 2027   Retirement:  22 January 2030 Question is updated on 23 October 2024 Click here for reference

Explanation
On 11 September 1948.  Quaid-e-Azam died *** Mohammed Ali Jinnah died on  September 11, 1948, in Karachi, Pakistan. Mohammed Ali Jinnah was the  founder and first governor-general (1947–48) of Pakistan Mohammad Ali Jinnah  Born:  December 25, 1876, Karachi Spouse:  Rattanbai Jinnah (m. 1918–1929), Emibai Jinnah (m. 1892–1893) Siblings:  Fatima Jinnah, Shireen Jinnah, Maryam Bai Jinnah, Ahmad Ali Jinnah, Bunde Ali Jinnah, Rahmat Ali Jinnah Children:  Dina Wadia Parents:  Poonja Jinnah, Mithibai Jinnah Quaid-e-Azam Residency also  known  as  Ziarat Residency Quaid-e-Azam Residency is  located  in Ziarat,  Balochistan , Pakistan.