[PPSC Principal, HM and BPEO, 2020]
21. The crackling sound, heard when dry hair is combed with a hard rubber comb, is due to
The hair banging against the charged comb
Small electric sparks
The rubbing of the comb with the hair
None of the above
22. Which Union Ministry has launched the TOPS Junior Scheme ?
Agriculture
Youth Affairs and Sports
Human Resources Development
Commerce and Industry
23. Butter floats in droplets on the surface of a hot soup. But when the soup cools, the droplets spread out to form a thin layer on the surface. This happens because
Butter is less dense than the soup
Butter is more viscous than the soup
Surface tension of the soup increases on cooling
Butter forms an insulation layer to slow down cooling
24. On the moon, an astronaut cannot drink lemonade with the help of a straw because
Acceleration due to gravity on the moon is less
There is no atmosphere on the moon
Lemonade evaporates instantaneously on the moon
25. CHAMPIONS is
A technology platform as a one stop solution for MSMEs grievances and opportunities
A programme to encourage maximum participa-tion of U-14 girls in KHELO INDIA games
A support scheme for U-14 kids who exhibit extraordinary courage to protect others
A scholarship scheme for the top scorers of government schools in various entrance exams for undergraduate courses