Answer: D) Joystick Explanation: Here Joystick is the word doesn't belong with the others. Because Except Joystick all others are Output Devices whereas Joystick is Input Device. VDU - Visual Display Unit - Monitor to display Speakers - Output sound Plotter - used to produce single or multiple colored images.

Answer: A) Water Explanation: Here Grass is to Erosion and whereas Dam is to Water. Since Grass prevents Erosion similarly Dam prevents Water flow.   Hence, Grass : Erosion :: Dam : Water.

Answer: C) Wednesday Explanation: 17th June, 1998 = (1997 years + Period from 1.1.1998 to 17.6.1998)Odd days in 1600 years = 0Odd days in 300 years = 197 years has 24 leap years + 73 ordinary years.Number of odd days in 97 years ( 24 x 2 + 73) = 121 = 2 odd days.Jan. Feb. March. April. May. June.(31 + 28 + 31 + 30 + 31 + 17) = 168 days168 days = 24 weeks = 0 odd day.Total number of odd days = (0 + 1 + 2 + 0) = 3.Given day is Wednesday.

Answer: A) seed Explanation: Fish is from eggs whereas plant is from seeds.

Answer: A) Both a and b follows Explanation: Both are the right courses of action for effective implementation of Computer Education at primary level urban and rural schools.

Answer: C) 32 KIPS व्याख्या: निर्देश प्रति सेकंड (IPS) कंप्यूटर के प्रोसेसर की गति का एक माप है। पर्सनल कंप्यूटर की CPU स्पीड 32 KIPS (किलो इंस्ट्रक्शन प्रति सेकंड) होती है।

Answer: D) 10 km Explanation: Let distance = x km.Time taken at 3 kmph : dist/speed = x/3 = 20 min late.time taken at 4 kmph : x/4 = 30 min earlierdifference between time taken : 30-(-20) = 50 mins = 50/60 hours.x/3- x/4 = 50/60x/12 = 5/6x = 10 km.

Answer: B) निर्देश पढ़ें स्पष्टीकरण: नियंत्रण इकाई कार्य कर सकती है निर्देशों की व्याख्या करें, निर्देश निष्पादित करें और प्रत्यक्ष संचालन करें। लेकिन निर्देश पढ़ना कंट्रोल यूनिट का कार्य नहीं है।