Which one among the following is not a desirable aim of science education at the upper primary level?

• To know the facts and principles of science and its applications

• To nurture the natural curiosity, aesthetic sense, and creativity in science and technology

• To gain the knowledge available through memorizing the content and process of science

• To imbibe the values of honesty, integrity and cooperation

Select the correct statement regarding rods and cones in the human eye.

• Cones are sensitive to dim light

• Rods are sensitive to bright light

• Cones are sensitive to bright light

• Rods can sense colour

Consider the following terms

1. Lightning
2. Landslide
3. Thundering
4. Tsunami
5. Floods

Earthquakes can cause

• B, D, and E

• B and E

• A, B, and C

• Only A

An object is vibrating at 5000 Hz. The time period of the sound produced is

• 0.005 sec

• 0.02 sec

• 0.0002 sec

• 0.5 sec

Which one of the following planets has no natural satellite of its own?

• Uranus

• Mars

• Venus

• Jupiter

A bus covers the first 10 km of its journey at an average speed of 40 km/h and the remaining 45 km at an average speed of 60 km/h. The average speed of the bus for its total journey is

• 52.5 km/h

• 55 km/h

• 50 km/h

• 57.5 km/h

Which one of the following shows the correct sequence of the path of urine in the human excretory system?

• Kidney → Urinary bladder → Ureter → Urethra

• Kidney → Ureter → Urinary bladder → Urethra

• Kidney → Urinary bladder → Urethra → Ureter

• Kidney → Urethra → Urinary bladder → Ureter

138.

Sometimes after doing physical work we get muscle cramps. This results due to

• non-conversion of glucose to pyruvate

• conversion of pyruvate to alcohol

• non-conversion of glucose to lactic acid

• conversion of pyruvate to lactic acid

Polio is caused by a

• Protozoa

• Fungi

• Virus

• Bacteria

Which one of the following sets is the combination of organs of the human digestive system that do not carry out any digestive function?

• Oesophagus, large intestine, rectum

• Buccal cavity, esophagus, large intestine

• Buccal cavity, large intestine, rectum

• Buccal cavity, oesophagus, rectum