When is 'World Environment Day' celebrated?
The question asks for the date on which 'World Environment Day' is celebrated. This is a factual question related to important international observances. Knowledge of such dates is often tested in competitive exams.
Correct Option: C) 5 th June
World Environment Day is celebrated every year on June 5th. This day is dedicated to raising awareness and generating political attention and action towards environmental protection.
To solve this expression, we need to follow the order of operations, commonly remembered by the acronym PEMDAS/BODMAS. This stands for Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).
First, perform the multiplication:
\[ 4 \times 10 = 40 \]The expression becomes:
\[ 6 + 40 \div 2 - 9 \]Next, perform the division:
\[ 40 \div 2 = 20 \]The expression now is:
\[ 6 + 20 - 9 \]First, perform the addition:
\[ 6 + 20 = 26 \]The expression becomes:
\[ 26 - 9 \]Finally, perform the subtraction:
\[ 26 - 9 = 17 \]Thus, the value of the expression is 17.
Correct Option: D) The correct value of the expression \(6 + 4 \times 10 \div 2 - 9\) is 17, as calculated by following the order of operations.
On which day is World Day to Combat Desertification and Drought observed?
The question asks for the specific date on which World Day to Combat Desertification and Drought is observed. This is a factual question requiring knowledge of important international days and their observances.
A) 17th June is the correct date for the observance of World Day to Combat Desertification and Drought. It was established by the United Nations General Assembly in 1994 to promote public awareness of the issue.
The question asks about the composition of the UN Security Council in terms of its permanent and non-permanent members. This is a factual question related to international organizations and general knowledge.
Correct Option: D) 5 permanent and 10 non-permanent members
The question asks about a fundamental characteristic that uniquely identifies each chemical element in addition to its name. We need to consider the standard conventions used in chemistry for representing elements.
C) a unique chemical symbol — Each element is assigned a unique chemical symbol by IUPAC, which serves as a universal shorthand representation for that element. This is a fundamental aspect of chemical notation.
This problem involves a ladder leaning against a wall, forming a right-angled triangle with the wall and the ground. We can use the Pythagorean theorem to find the distance of the ladder's base from the wall in two different scenarios and then calculate the difference.
Using the Pythagorean theorem (\(L^2 = H_1^2 + D_1^2\)):
\[ 10^2 = 8^2 + D_1^2 \]\[ 100 = 64 + D_1^2 \]\[ D_1^2 = 100 - 64 \]\[ D_1^2 = 36 \]\[ D_1 = \sqrt{36} \]\[ D_1 = 6 \text{ ft} \]Using the Pythagorean theorem (\(L^2 = H_2^2 + D_2^2\)):
\[ 10^2 = (9.6)^2 + D_2^2 \]\[ 100 = 92.16 + D_2^2 \]\[ D_2^2 = 100 - 92.16 \]\[ D_2^2 = 7.84 \]\[ D_2 = \sqrt{7.84} \]\[ D_2 = 2.8 \text{ ft} \]This is the difference between the initial distance and the final distance.
\[ \text{Distance moved} = D_1 - D_2 \]\[ \text{Distance moved} = 6 \text{ ft} - 2.8 \text{ ft} \]\[ \text{Distance moved} = 3.2 \text{ ft} \]B) 3.2 ft
The question asks for the earlier name of the Bhabha Atomic Research Centre (BARC). This requires knowledge of the history and evolution of India's nuclear research institutions.
Correct Option: B) Atomic Energy Establishment, Trombay was the earlier name of the Bhabha Atomic Research Centre (BARC).
The question asks for the headquarters of the World Health Organization (WHO). This is a factual question requiring knowledge of international organizations and their locations.
The World Health Organization (WHO) was established on 7 April 1948 and is headquartered in Geneva, Switzerland.
A) Geneva, Switzerland is the correct answer. The World Health Organization (WHO) has its headquarters in Geneva, Switzerland.
The question asks about the age group of children for whom free and compulsory education is a Fundamental Right, as implemented by the Sarva Shiksha Abhiyan. This requires knowledge of the Right to Education Act and its associated age criteria.
Correct Option: A) 6-14 years. This is the age group explicitly mentioned in Article 21A of the Indian Constitution and subsequently implemented through the Right to Education Act, 2009, and programs like Sarva Shiksha Abhiyan.
The question asks to identify the tallest tree in the world from the given options. This requires knowledge of common tree species and their characteristics, specifically their maximum height.
A) Redwood — The Coast Redwood (Sequoia sempervirens) is indeed the tallest tree species in the world. The tallest known individual tree, "Hyperion," is a Coast Redwood.