dat

Core Foundation The DAT Destroyer and Math Destroyer form the core foundation of the DAT study materials developed by Dr. Jim Romano. These are the same books Dr. Romano uses in his classroom setting. We also offer additional books for Organic Chemistry and General Chemistry if you are weak in...

Core Foundation The DAT Destroyer and Math Destroyer form the core foundation of the DAT study materials developed by Dr. Jim Romano. These are the same books Dr. Romano uses in his classroom setting. We also offer additional books for Organic Chemistry and General Chemistry if you are weak in...

Core Foundation in Dr. Romano’s DAT Courses Students often ask which DAT study materials are used in Dr. Romano’s DAT preparation classes. Two books sit at the core of Dr. Romano’s course curriculum, both online and in person: the DAT Destroyer and the Math Destroyer. DAT Destroyer Math...

Try solving this DAT quantitative reasoning question before swiping to the solution. Tournament style problems like this are a common way combinations appear on the DAT. Many students preparing for the DAT begin with the core foundation materials used in Dr. Romano’s classroom DAT...

#DAT Question of the DAY…. In addition to the alcohol functionality, what other group is present? a) Ether b) Ester c) Acetal d) Hemiacetal e) Anhydride f) More than one of these !! g) None of these ! D is correct ! The lower right side of these molecules has a hemiacetal group. In...

DAT Math Question of the Day A hockey player has played 17 games out of a total of 25 games played this season. He scored a goal in 3 games. What is the probability that the player will play the next game and score a goal? A) 68% B) 12% C) 8.16% D) 10% E) 32% Answer: B 17/25 = 0.68 is...

Nicole was a classroom student who prepared for the DAT with Dr. Jim Romano while working through the DAT Destroyer and Math Destroyer. In this video, she explains how consistent practice, structured review, and Dr. Romano’s teaching style and sense of humor helped her strengthen weak areas...

DAT Question of the DAY The [H⁺] and pH of 0.0037 M HCl are: a) 0.0074 M and 2.43 b) 0.0037 M and 2.43 c) 0.0074 M and 2.13 d) 0.0037 M and 2.13 e) 0.0037 M and –2.13 B is correct. My cat Hope cannot write up any easier questions for you. pH = –log (3.7 × 10⁻³) = 2.43 duh. Strong...

In this short video, Prof. Blois breaks down one of the most commonly tested DAT Quantitative Reasoning topics: combinations vs permutations. Many students lose points not because the math is difficult, but because they confuse when order matters and when it does not. If you are beginning...

70 % of the Hockey referees freeze the pucks before the game. If 8 referees are chosen at random what is the probability that exactly 5 of them freeze the puck before the game? A) 70 % B) 8 % C) 5% D) 15 % E) 25 % Answer: E 8C5*(0.7)^5*(0.3)^3 8C5 = 8!/{(8-5)!*5!} = 56 560.1680.027 =...

One of the most common mistakes on DAT investment problems is confusing total value with total profit. Total investment = 50,000 Total accumulated value = 54,300 Actual profit = 4,300 The equation must reflect profit: 0.14x + 0.02(50,000 − x) = 4,300 Once the setup is correct, the...

We would like to congratulate one of our students, Mr. E, on his acceptance to the Touro College of Dental Medicine — Class of 2030. Dental school admission is the culmination of years of academic effort, disciplined preparation, and perseverance. We are proud to have supported Mr. E...

Congratulations to Ngoc Tuong, who was selected at random from all eligible entries as the winner of our DAT Destroyer giveaway. Thank you to everyone who participated and shared your DAT preparation plans. We truly appreciate this community and wish you all the best on your upcoming exams...

Congratulations to Ngoc Tuong, who was selected at random from all eligible entries as the winner of our DAT Destroyer giveaway. Thank you to everyone who participated and shared your DAT preparation plans. We truly appreciate this community and wish you all the best on your upcoming exams...

Colligative properties are a classic high-yield topic on the DAT General Chemistry section. Understanding how particle number affects boiling point elevation, freezing point depression, and osmotic pressure is essential for solving many exam questions efficiently. In this video, Dr. Jim Romano...

Here is a representative Quantitative Reasoning problem involving prime factorization — a concept that appears frequently on the DAT in disguised form. Problem 224 = (2^a)(7^b) What is a / b ? A) 7 B) 5 C) 7/5 D) 5/5 E) 1/7 Try solving it before looking at the explanation. Solution...

What effect will adding additional O₂ (g) have on the following equilibrium system once equilibrium is reestablished? 2 CO₂ (g) ⇌ 2 CO (g) + O₂ (g)  ΔH° = −514 kJ a) The concentration of CO (g) will increase b) The concentration of CO₂ (g) will decrease c) The equilibrium constant for the...

Here is a classic combined work rate problem similar to what you may encounter on the Quantitative Reasoning section of the DAT. Three printers are typing a full report. • Printer A types 1/2 of the report in 2 hours • Printer B types 1 full report in 2 hours • Printer C types 1/4 of the...

Discount word problems are a common source of lost points on the DAT Quantitative Reasoning section. In this video, Prof. Denis Blois walks through a representative discount problem step-by-step, showing how to correctly interpret percentages, compare original and sale prices, and avoid the...

Omar Daraghmeh has several bottles of liquids. Which pair is MOST likely to behave as an IDEAL solution (Raoult’s Law)? Correct Answer: C) Hexane + Heptane

Hi Dr. Romano I just wanted to reach out and let you know that I’ve committed to Boston University Henry M. Goldman School of Dental Medicine, DMD Class of 2030. Thank you again for all your work and for pushing me to accomplish so much. We’re proud to celebrate our former student and wish...

With Valentine’s Day here, we wanted to do something supportive for students preparing for the DAT. We’re hosting a Valentine’s Giveaway and giving away one free DAT or OAT Destroyer book to a student using serious DAT study materials. If the winner already owns the DAT Destroyer, no worries...

Which atom has the smallest first ionization energy? (A) Mg (B) Al (C) Si (D) P (E) He Answer: B — Aluminum This is a classic DAT conceptual exception. Although first ionization energy generally increases from left to right across a period, there is a well-known anomaly between Group 2...

DAT questions often test application, not memorization. Today’s General Chemistry Question of the Day focuses on a molecular geometry application involving a coordination compound. Rather than asking for definitions, this question requires reasoning by analogy to determine how molecular...

Sharing a short General Chemistry video for DAT and OAT students. In this lesson, Dr. Jim Romano explains how density problems are tested on the DAT and walks through the setup step by step. These questions are very common, especially for students early in their preparation, and mistakes...

One of our students just received an acceptance to Touro College of Dental Medicine — Class of 2030. “I just wanted to let you know I got into Touro. Thank you for all your help throughout this process — I couldn’t have done it without you and the DAT Destroyer.” Congratulations on a...

Dr. Jim Romano explains enzymes and inhibitors — a high-yield DAT Biology topic that students frequently miss. Watch here: DAT Destroyer Resources: 2026 DAT Destroyer – High-Yield DAT Science Study Guide For free daily help, join the DAT Destroyer Facebook Study Group (Official DAT...

Answer is C Quick DAT Question of the Day (General Chemistry): Root mean square speed is given by: vrms=3RTMv_{rms} = \sqrt{\frac{3RT}{M}}vrms=M3RT Consider nitrogen and hydrogen at 35°C. At what temperature would they display equal RMS speed? (See the slides below for the full setup...

Thank you to the students who have trusted DAT Destroyer over the years. We will continue posting FREE high-yield DAT Biology, General Chemistry, and Organic Chemistry videos to help students prepare the right way. Official Channel: DAT Destroyer by Dr. Jim Romano For free daily help, join...

High-yield DAT General Chemistry topic. In this video, Dr. Jim Romano explains heat of formation calculations step by step and shows how to correctly calculate reaction enthalpy using thermochemical data without falling into common DAT traps. This is a concept students often try to memorize...

As a thank-you to the SDN community, SDN members can use the discount code SDNTake10 for 10% off any single Destroyer book (DAT or OAT). Please note: • The discount applies to individual books only • Bundles are already discounted automatically at checkout, so no additional code is needed for...

Many students struggle with DAT Organic Chemistry because they try to memorize reactions instead of understanding reaction mechanisms. In this short video, Dr. Jim Romano explains how to approach DAT Organic Chemistry mechanisms using clear, step-by-step reasoning and DAT-style strategy. The...

Hi everyone — wanted to share a quick video walkthrough on an important QR topic that many students struggle with: Comparison Word Problems This video breaks down how to approach DAT-style comparison problems step-by-step so you can avoid timing traps and avoid common mistakes. YouTube 📹...

#DAT Question of the Day.... Identify the structures indicated by the arrows. a) Secretory granules b) Ribosomes c) Lipid droplets d) Lysosomes e) Glycogen granules Correct answer: B — Ribosomes Ribosomes are essential cellular machines responsible for protein synthesis. They translate...

General chemistry pH calculations are a high-yield topic on the DAT and OAT, and many students lose points by overthinking the setup. In this short video, Dr. Jim Romano walks through a clear, exam-focused approach to pH calculations so you can recognize the correct method quickly and avoid...

DAT Question of the Day Consider the process shown (pyruvate → acetyl-CoA). Question: What vitamin is most involved? a) Vitamin C b) Vitamin D c) Vitamin B d) Vitamin K e) Vitamin A Correct answer: c) Vitamin B (specifically Vitamin B1, thiamine) Why? This reaction involves a...

The number of carbon atoms in the parent chain when naming this compound by IUPAC is ____________. a) 4 b) 5 c) 6 d) 7 e) None of these Correct Answer: B (5) This one is tricky AF. The longest carbon chain MUST contain the parent functional group. In this problem, the parent...

Mr. Rostov invested a sum of money into an index fund that pays 9% interest per year. After 30 years, his gain was $1,326,767.85. Prior to the investment, Mr. Rostov was saving $50 per day from his salary. How long did he have to save to invest the needed amount to obtain those gains? A) 2.5...