General Science - Online Test
Q1. The situation of ‘abnormal profits’ arise for a firm when
Answer : Option C
Explaination / Solution:
No Explaination.
Q2. The balance of carbon dioxide and oxygen has been upset by :
Answer : Option B
Explaination / Solution:
The balance of carbon dioxide and oxygen has been upset by Burning fossil fuels and deforestation which causes release of excessive CO2 and reduced O2
Q3. Lines in the hydrogen spectrum which appear in the infrared region of the electromagnetic Spectrum, then they are called as
Answer : Option B
Explaination / Solution:
The Lyman series lies in the ultraviolet, whereas the Paschen, Brackett, and Pfund series lie in the infrared.
Q4. A ‘thermacole’ icebox is a cheap and efficient method for storing small quantities of cooked food in summer in particular. A cubical icebox of side 30 cm has a thickness of 5.0 cm. If 4.0 kg of ice is put in the box, estimate the amount of ice remaining after 6 h. The outside temperature is 45 C, and co-efficient of thermal conductivity of thermacole is 0.01 J . [Heat of fusion of water = 335 ]
Answer : Option D
Explaination / Solution:
A = Surface area of the box = 6s2 = 6 × (0.3)2 = 0.54 m3
Time gap, t = 6 h = 6 × 60 × 60 s
But Q = m'L
∴ m' = Q/L
= 104976/(335 × 103) = 0.313 kg
Mass of ice left = 4 – 0.3 = 3.7 kg
Hence, the amount of ice remaining after 6 h is 3.7 kg.
Q5.
Calculate Karl Pearson’s coefficient of correlation on the following data:
Answer : Option A
Explaination / Solution:
Q6. In which programme people were encouraged to form SHG
Answer : Option A
Explaination / Solution:
The SGSY(Swarnajayanti Gram Swarojgar Yojana) aims at providing self employment to villagers through the establishment of self help groups. Activity clusters are established based on the aptitude and skill of the people which are nurtured to their maximum potential. Funds are provided by NGO's, banks and financial institutions.
Q7. The sporophytes bearing sporangia having leaf-like appendages are called
Answer : Option B
Explaination / Solution:
The sporophytes bear sporangia that are subtended by leaf-like appendages called sporophylls.
Q8. Middle lamella is mainly composed of
Answer : Option C
Explaination / Solution:
The middle lamella is a layer mainly of calcium pectate which holds or glues the different neighbouring cells together.
Q9. When scope of enquiry is limited and the universe containing a unit having different characteristics make the intensive study of each unit desirable, which method is more suitable?
Answer : Option B
Explaination / Solution:
Because census method provides a detailed, reliable, and true measure of population without any sampling error.
Q10. A reduction in the atomic size with increase in atomic number is characteristic of the elements of
Answer : Option C
Explaination / Solution:
In f block elements with increase in atomic number atomic radii decreases smoothly.
