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TOEFL Preparation - Grammar Test
General English Grammar Questions and Answers


1. We ________ living here since 1990.


2. Akbar ________ the Moghul power paramount in India.


3. She ________ for Delhi this evening.


4. ‘I know you don’t like me. I don’t like you ________.’


5. I ________ school last year.



6. I ________ since six o’clock, and I was getting tired.


7. They will come if we ________ them.


8. She ________ the railway station before the train came.


9. ________, she went on working.


10. The train ________ by the time we reach the station.


English Test

1. TOEFL Preparation - Grammar Test - 06
2. TOEFL Preparation - Grammar Test - 07
3. TOEFL Preparation - Grammar Test - 08
4. TOEFL Preparation - Grammar Test - 09
5. TOEFL Preparation - Grammar Test - 10
6. TOEFL Preparation - Grammar Test - 11
7. TOEFL Preparation - Grammar Test - 12
8. TOEFL Preparation - Grammar Test - 13
9. TOEFL Preparation - Grammar Test - 14
10. TOEFL Preparation - Grammar Test - 15
11. TOEFL Preparation - Grammar Test - 16
12. TOEFL Preparation - Grammar Test - 17
13. TOEFL Preparation - Grammar Test - 18
14. TOEFL Preparation - Grammar Test - 19
15. Antonym Test - 01
16. Antonym Test - 02
17. Antonym Test - 03
18. Antonym Test - 04
19. Antonym Test - 05
20. Antonym Test - 06
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  • Jaundice

  • Precautions while using Centrifuge

    Safe Procedures for Centrifugation

    Before centrifugation 1 Train each operator on proper operating procedures, review the user manual. 2 Use only rotors compatible with the centrifuge. Check the expiration date for ultracentrifuge rotors.3 Check tubes, bottles, and rotors for cracks and deformities before each use. 4 Make sure that the rotor, tubes, and spindle are dry and clean. 5 Examine O rings and replace if worn, cracked, or missing. 6 Never overfill centrifuge tubes (don t exceed ? full). 7 Always cap tubes before centrifugation. Always balance8 buckets, tubes, and rotors properly.9 Check that the rotor is seated on the drive correctly, close the lid on the centrifuge, and secure it.10 When using swinging bucket rotors, make sure that all buckets are hooked correctly and move freely.


    Chourishi Systems