HSA Mixed Practice Test #47

Question 1

Gravity discovered by:‌​‍

Accepted Answer

Newton — Sir Isaac Newton — Law of Universal Gravitation.‌​‍

Answer

Galileo

Answer

Kepler

Answer

Einstein

Question 2

Photosynthesis in plants occurs in:‌​‍

Accepted Answer

Chloroplast — Chloroplast — contains chlorophyll.‌​‍

Answer

Ribosomes

Answer

Mitochondria

Answer

Nucleus

Question 3

A school principal is planning an annual event to acknowledge and appreciate the dedication of teachers in shaping young minds. Which specific day in the Indian calendar would be most appropriate for this celebration, and what is its historical significance?

Accepted Answer

C. September 5th, in honor of Dr. Sarvepalli Radhakrishnan's birthday and his dedication to teaching. — Teachers' Day in India is celebrated on September 5th, which is the birth anniversary of Dr. Sarvepalli Radhakrishnan, India's second President and a revered philosopher and teacher. He believed that 'teachers should be the best minds in the country' and dedicated his life to education. Options A, B, and D refer to other significant personalities or days, but not the primary reason for Indian Teachers' Day.

Answer

A. September 5th, commemorating Dr. A.P.J. Abdul Kalam's contributions to science and education.

Answer

B. November 11th, to remember Maulana Abul Kalam Azad's advocacy for universal education.

Answer

D. October 15th, marking the birth anniversary of Dr. B.R. Ambedkar and his efforts in social reform.

Question 4

Guru Nanak (1469-1539), founder of Sikhism, emphasised:‌​‍

Accepted Answer

Ek Onkar (one God), nirguna devotion, rejection of caste, langar — Born at Talwandi (Nankana Sahib, Pakistan). ‌​‍Hymns in Guru Granth Sahib. Established Kartarpur. ‌​‍Mardana (Muslim) was his companion.

Answer

Ritual sacrifice

Answer

Idol worship

Answer

Varna-ashrama

Question 5

Percentage of N in NH₃ (M=17):‌​‍

Accepted Answer

14/17 = 82.35% — %N = (14/17) × 100 ≈ 82.35%. H = 3/17 ≈ 17.65%.‌​‍

Answer

100%

Answer

17%

Answer

14%

Question 6

Kepler's third law: T² ∝:

Accepted Answer

r³ — T² = 4π²r³/(GM). Basis of planetary period-distance relationship.

Answer

r

Answer

r²

Answer

r⁴

Question 7

Synonym of ARDUOUS:‌​‍

Accepted Answer

Difficult — Arduous = requiring great effort, difficult.‌​‍

Answer

Simple

Answer

Easy

Answer

Relaxing

Question 8

Thumba Equatorial Rocket Launching Station:‌​‍

Accepted Answer

TVM — India's first rocket launched here (1963).‌​‍

Answer

Chennai

Answer

Sriharikota

Answer

Bangalore

Question 9

LS seats:‌​‍

Accepted Answer

543 — 543 current. 552 maximum.‌​‍

Answer

500

Answer

545

Answer

552

Question 10

Glucose, a simple sugar, has formula:‌​‍

Accepted Answer

C₆H₁₂O₆ — Glucose (monosaccharide): C₆H₁₂O₆. ‌​‍Fructose has same formula but different structure (isomer).

Answer

C₆H₆

Answer

C₂H₅OH

Answer

C₁₂H₂₂O₁₁

HSA Mixed Practice Test #47