Explanation

Any non-zero number raised to the power 0 is always 1.

So, (1/2)° = 1

Last verified on 10-07-2026

Explanation

(5a + 6b - 2c) - (4a + 3b - c)  

Remove brackets. Remember to change signs:  

= 5a + 6b - 2c - 4a - 3b + c  

Combine like terms:  

= (5a - 4a) + (6b - 3b) + (-2c + c)  

= a + 3b - c

Last verified on 10-07-2026

Explanation

2³ = 2 × 2 × 2 = 8  

3³ = 3 × 3 × 3 = 27  

5³ = 5 × 5 × 5 = 125  

Now,  

2³ + 3³ - 5³ = 8 + 27 - 125  

= 35 - 125  

= -90

Last verified on 10-07-2026

Explanation

17² = 17 × 17 = 289  

Now convert 289 to binary:  

289 = 256 + 32 + 1  

256 = 2⁸  

32 = 2⁵  

1 = 2⁰  

Place 1 at 8th, 5th and 0th positions.  

Binary = 1 0001 0001  

So, 100010001

Last verified on 10-07-2026

Explanation

• Chemical Name: Acetic Acid (Ethanoic Acid)
• Chemical Formula: CH₃COOH
• Vinegar Concentration: 4–8% Acetic Acid
• Type of Acid: Weak Organic Acid
• Uses: Food seasoning, pickling, preservation, cleaning

Last verified on 10-07-2026

Explanation

• Sound waves in solvents (like liquids) travel as longitudinal waves, where particles vibrate parallel to the direction of wave propagation.
• These are a type of mechanical wave, requiring a medium to travel.

Last verified on 19-03-2026

Explanation

• Australia is the smallest continent in the world by area.
• It covers an area of about 7.69 million km² (2.97 million square miles).
• It is also the only continent that is a single country.
• It is located in the Southern Hemisphere between the Indian and Pacific Oceans.
• It is known as the island continent.
• It covers roughly 6% of the world's total land area.
• It is the flattest Continent.

Additional information:

• Antarctica is the smallest continent in the world by population.
• First and Largest Continents by area: Asia.
• Second Largest Continents by area: Africa.
• Third Largest Continents by area: North America.
• Fourth Largest Continents by area: South America.
• Fifth Largest Continent by area: Antarctica.
• Sixth Largest Continent by area: Europe.
• Seventh and Smallest Continents by area: Australia.

Last verified on 07-03-2026

Explanation

• Raw Materials: Ammonia (NH₃) and Carbon Dioxide (CO₂)
• Chemical Formula: CO(NH₂)₂
• Nitrogen Content: 46%
• Type: Nitrogen fertilizer
• Industrial Process: Bosch–Meiser process

Last verified on 09-07-2026

Explanation

• 760 torr = 101,325 Pa
• 760 torr = 1 atm
• 760 torr = 760 mmHg
• SI Unit of Pressure: Pascal (Pa)

Last verified on 09-07-2026

Explanation

• Date of Labour Day: 1 May (every year)
• Origin: Haymarket Affair, Chicago
• Year: 1886
• Demand: 8-hour working day
• Status: International Labour Day / Workers’ Day

Last verified on 11-06-2026