Direction: Select the most appropriate antonym to substitute the bracketed word in the given sentence.

Similarly Sirius, the most (luminous) star in all the heavens, actually has a faint companion.

The correct answer is "gloomy."

 Key Points

• The given sentence describes Sirius as the most luminous star in all the heavens.
• "Luminous" means emitting light or shining brightly. (अँधेरे में चमकने वाला)
  • Example: This is luminous watch.
• The antonym of luminous is gloomy.
• It means dark or dim. (ऐसा गहरा कि उदास कर दे)
  • Example: This dark paint makes the room very gloomy.
• Therefore, the most appropriate antonym to substitute the word 'luminous' in the given sentence is gloomy.
• The correct answer is Option 4.
   

Additional Information

• Option 1, excited: This word means feeling or showing happiness and enthusiasm. It is not an antonym of luminous. (उत्तेजित, व्‍यग्र; अधीर)
• Option 2, miserable: This word means feeling or showing extreme unhappiness. It is not an antonym of luminous. (बहुत उदास, दयनीय)
• Option 3, serious: This word means showing deep thought or concern. It is not an antonym of luminous. 9दुर्दशाग्रस्‍त; बुरी हालत या ख़तरनाक या चिंताजनक)